{
 "version": "v1",
 "edgeCount": 1523,
 "note": "topicId depends on prerequisiteId. Strength and reason are absent: the source graph does not record them.",
 "dependencies": [
  {
   "topicId": "root_hsk13_vocab",
   "prerequisiteId": "h3_capstone"
  },
  {
   "topicId": "root_hsk13_grammar",
   "prerequisiteId": "h3_capstone"
  },
  {
   "topicId": "root_basic_sentences",
   "prerequisiteId": "root_hsk13_grammar"
  },
  {
   "topicId": "root_aspect_basic",
   "prerequisiteId": "root_hsk13_grammar"
  },
  {
   "topicId": "root_aspect_basic",
   "prerequisiteId": "h1_gr_le_aspect"
  },
  {
   "topicId": "root_modal_basic",
   "prerequisiteId": "root_hsk13_grammar"
  },
  {
   "topicId": "root_modal_basic",
   "prerequisiteId": "h1_gr_modal_hui_neng"
  },
  {
   "topicId": "root_comparison_basic",
   "prerequisiteId": "root_hsk13_grammar"
  },
  {
   "topicId": "root_comparison_basic",
   "prerequisiteId": "h1_gr_comparison"
  },
  {
   "topicId": "root_resultative_basic",
   "prerequisiteId": "root_hsk13_grammar"
  },
  {
   "topicId": "root_resultative_basic",
   "prerequisiteId": "h2_gr_result_complements"
  },
  {
   "topicId": "root_measure_basic",
   "prerequisiteId": "root_hsk13_grammar"
  },
  {
   "topicId": "root_measure_basic",
   "prerequisiteId": "h1_gr_num_measure"
  },
  {
   "topicId": "vc_conjunctions",
   "prerequisiteId": "root_hsk13_vocab"
  },
  {
   "topicId": "vc_conjunctions",
   "prerequisiteId": "root_hsk13_grammar"
  },
  {
   "topicId": "vc_conjunctions",
   "prerequisiteId": "h1_vc_function_words"
  },
  {
   "topicId": "vc_conjunctions",
   "prerequisiteId": "h3_vc_conjunctions_adverbs"
  },
  {
   "topicId": "vc_modal_adverbs",
   "prerequisiteId": "root_hsk13_vocab"
  },
  {
   "topicId": "vc_modal_adverbs",
   "prerequisiteId": "root_hsk13_grammar"
  },
  {
   "topicId": "vc_modal_adverbs",
   "prerequisiteId": "h3_gr_modal_adverbs"
  },
  {
   "topicId": "vc_degree_scope",
   "prerequisiteId": "root_hsk13_vocab"
  },
  {
   "topicId": "vc_degree_scope",
   "prerequisiteId": "root_hsk13_grammar"
  },
  {
   "topicId": "vc_time_words",
   "prerequisiteId": "root_hsk13_vocab"
  },
  {
   "topicId": "vc_time_words",
   "prerequisiteId": "root_hsk13_grammar"
  },
  {
   "topicId": "vc_work_management",
   "prerequisiteId": "root_hsk13_vocab"
  },
  {
   "topicId": "vc_work_management",
   "prerequisiteId": "root_hsk13_grammar"
  },
  {
   "topicId": "vc_work_management",
   "prerequisiteId": "h3_vc_work_society"
  },
  {
   "topicId": "vc_professions",
   "prerequisiteId": "root_hsk13_vocab"
  },
  {
   "topicId": "vc_professions",
   "prerequisiteId": "root_hsk13_grammar"
  },
  {
   "topicId": "vc_academic",
   "prerequisiteId": "root_hsk13_vocab"
  },
  {
   "topicId": "vc_academic",
   "prerequisiteId": "root_hsk13_grammar"
  },
  {
   "topicId": "vc_academic",
   "prerequisiteId": "h3_vc_school_study"
  },
  {
   "topicId": "vc_office_tech",
   "prerequisiteId": "root_hsk13_vocab"
  },
  {
   "topicId": "vc_office_tech",
   "prerequisiteId": "root_hsk13_grammar"
  },
  {
   "topicId": "vc_business_finance",
   "prerequisiteId": "root_hsk13_vocab"
  },
  {
   "topicId": "vc_business_finance",
   "prerequisiteId": "root_hsk13_grammar"
  },
  {
   "topicId": "vc_shopping_daily",
   "prerequisiteId": "root_hsk13_vocab"
  },
  {
   "topicId": "vc_shopping_daily",
   "prerequisiteId": "root_hsk13_grammar"
  },
  {
   "topicId": "vc_shopping_daily",
   "prerequisiteId": "h2_vc_money_shopping"
  },
  {
   "topicId": "vc_travel_logistics",
   "prerequisiteId": "root_hsk13_vocab"
  },
  {
   "topicId": "vc_travel_logistics",
   "prerequisiteId": "root_hsk13_grammar"
  },
  {
   "topicId": "vc_travel_logistics",
   "prerequisiteId": "h3_vc_travel_transport"
  },
  {
   "topicId": "vc_geography_places",
   "prerequisiteId": "root_hsk13_vocab"
  },
  {
   "topicId": "vc_geography_places",
   "prerequisiteId": "root_hsk13_grammar"
  },
  {
   "topicId": "vc_geography_places",
   "prerequisiteId": "h3_vc_places"
  },
  {
   "topicId": "vc_nature_climate",
   "prerequisiteId": "root_hsk13_vocab"
  },
  {
   "topicId": "vc_nature_climate",
   "prerequisiteId": "root_hsk13_grammar"
  },
  {
   "topicId": "vc_nature_climate",
   "prerequisiteId": "h3_vc_nature"
  },
  {
   "topicId": "vc_environment_protect",
   "prerequisiteId": "root_hsk13_vocab"
  },
  {
   "topicId": "vc_environment_protect",
   "prerequisiteId": "root_hsk13_grammar"
  },
  {
   "topicId": "vc_culture_arts",
   "prerequisiteId": "root_hsk13_vocab"
  },
  {
   "topicId": "vc_culture_arts",
   "prerequisiteId": "root_hsk13_grammar"
  },
  {
   "topicId": "vc_culture_arts",
   "prerequisiteId": "h3_vc_entertainment"
  },
  {
   "topicId": "vc_sports_leisure",
   "prerequisiteId": "root_hsk13_vocab"
  },
  {
   "topicId": "vc_sports_leisure",
   "prerequisiteId": "root_hsk13_grammar"
  },
  {
   "topicId": "vc_sports_leisure",
   "prerequisiteId": "h2_vc_sports_hobbies"
  },
  {
   "topicId": "vc_health_body",
   "prerequisiteId": "root_hsk13_vocab"
  },
  {
   "topicId": "vc_health_body",
   "prerequisiteId": "root_hsk13_grammar"
  },
  {
   "topicId": "vc_health_body",
   "prerequisiteId": "h3_vc_health"
  },
  {
   "topicId": "vc_food_flavors",
   "prerequisiteId": "root_hsk13_vocab"
  },
  {
   "topicId": "vc_food_flavors",
   "prerequisiteId": "root_hsk13_grammar"
  },
  {
   "topicId": "vc_food_flavors",
   "prerequisiteId": "h3_vc_food"
  },
  {
   "topicId": "vc_dining_social",
   "prerequisiteId": "root_hsk13_vocab"
  },
  {
   "topicId": "vc_dining_social",
   "prerequisiteId": "root_hsk13_grammar"
  },
  {
   "topicId": "vc_home_objects",
   "prerequisiteId": "root_hsk13_vocab"
  },
  {
   "topicId": "vc_home_objects",
   "prerequisiteId": "root_hsk13_grammar"
  },
  {
   "topicId": "vc_containers_classifiers",
   "prerequisiteId": "root_hsk13_vocab"
  },
  {
   "topicId": "vc_containers_classifiers",
   "prerequisiteId": "root_hsk13_grammar"
  },
  {
   "topicId": "vc_containers_classifiers",
   "prerequisiteId": "h3_gr_classifiers"
  },
  {
   "topicId": "vc_personality_traits",
   "prerequisiteId": "root_hsk13_vocab"
  },
  {
   "topicId": "vc_personality_traits",
   "prerequisiteId": "root_hsk13_grammar"
  },
  {
   "topicId": "vc_emotions_positive",
   "prerequisiteId": "root_hsk13_vocab"
  },
  {
   "topicId": "vc_emotions_positive",
   "prerequisiteId": "root_hsk13_grammar"
  },
  {
   "topicId": "vc_emotions_positive",
   "prerequisiteId": "h3_vc_emotions"
  },
  {
   "topicId": "vc_emotions_negative",
   "prerequisiteId": "root_hsk13_vocab"
  },
  {
   "topicId": "vc_emotions_negative",
   "prerequisiteId": "root_hsk13_grammar"
  },
  {
   "topicId": "vc_emotions_negative",
   "prerequisiteId": "h1_vc_adjectives"
  },
  {
   "topicId": "vc_emotions_negative",
   "prerequisiteId": "h3_vc_emotions"
  },
  {
   "topicId": "vc_attitude_opinion",
   "prerequisiteId": "root_hsk13_vocab"
  },
  {
   "topicId": "vc_attitude_opinion",
   "prerequisiteId": "root_hsk13_grammar"
  },
  {
   "topicId": "vc_social_relations",
   "prerequisiteId": "root_hsk13_vocab"
  },
  {
   "topicId": "vc_social_relations",
   "prerequisiteId": "root_hsk13_grammar"
  },
  {
   "topicId": "vc_social_relations",
   "prerequisiteId": "h3_vc_social_relations"
  },
  {
   "topicId": "vc_growth_success",
   "prerequisiteId": "root_hsk13_vocab"
  },
  {
   "topicId": "vc_growth_success",
   "prerequisiteId": "root_hsk13_grammar"
  },
  {
   "topicId": "vc_growth_success",
   "prerequisiteId": "h3_vc_achievement_change"
  },
  {
   "topicId": "vc_cognition_thinking",
   "prerequisiteId": "root_hsk13_vocab"
  },
  {
   "topicId": "vc_cognition_thinking",
   "prerequisiteId": "root_hsk13_grammar"
  },
  {
   "topicId": "vc_cognition_thinking",
   "prerequisiteId": "h3_vc_cognitive_verbs"
  },
  {
   "topicId": "vc_communication",
   "prerequisiteId": "root_hsk13_vocab"
  },
  {
   "topicId": "vc_communication",
   "prerequisiteId": "root_hsk13_grammar"
  },
  {
   "topicId": "vc_communication",
   "prerequisiteId": "h2_vc_communication"
  },
  {
   "topicId": "vc_language_media",
   "prerequisiteId": "root_hsk13_vocab"
  },
  {
   "topicId": "vc_language_media",
   "prerequisiteId": "root_hsk13_grammar"
  },
  {
   "topicId": "vc_problems_solutions",
   "prerequisiteId": "root_hsk13_vocab"
  },
  {
   "topicId": "vc_problems_solutions",
   "prerequisiteId": "root_hsk13_grammar"
  },
  {
   "topicId": "vc_social_society",
   "prerequisiteId": "root_hsk13_vocab"
  },
  {
   "topicId": "vc_social_society",
   "prerequisiteId": "root_hsk13_grammar"
  },
  {
   "topicId": "vc_social_society",
   "prerequisiteId": "h3_vc_work_society"
  },
  {
   "topicId": "vc_description_quality",
   "prerequisiteId": "root_hsk13_vocab"
  },
  {
   "topicId": "vc_description_quality",
   "prerequisiteId": "root_hsk13_grammar"
  },
  {
   "topicId": "vc_description_quality",
   "prerequisiteId": "h3_vc_qualities_adverbs"
  },
  {
   "topicId": "vc_appearance_state",
   "prerequisiteId": "root_hsk13_vocab"
  },
  {
   "topicId": "vc_appearance_state",
   "prerequisiteId": "root_hsk13_grammar"
  },
  {
   "topicId": "vc_appearance_state",
   "prerequisiteId": "h2_vc_colors_appearance"
  },
  {
   "topicId": "vc_movement_actions",
   "prerequisiteId": "root_hsk13_vocab"
  },
  {
   "topicId": "vc_movement_actions",
   "prerequisiteId": "root_hsk13_grammar"
  },
  {
   "topicId": "vc_mental_actions",
   "prerequisiteId": "root_hsk13_vocab"
  },
  {
   "topicId": "vc_mental_actions",
   "prerequisiteId": "root_hsk13_grammar"
  },
  {
   "topicId": "vc_mental_actions",
   "prerequisiteId": "h3_vc_cognitive_verbs"
  },
  {
   "topicId": "vc_achievement_result",
   "prerequisiteId": "root_hsk13_vocab"
  },
  {
   "topicId": "vc_achievement_result",
   "prerequisiteId": "root_hsk13_grammar"
  },
  {
   "topicId": "vc_achievement_result",
   "prerequisiteId": "h3_vc_achievement_change"
  },
  {
   "topicId": "vc_cause_effect",
   "prerequisiteId": "root_hsk13_vocab"
  },
  {
   "topicId": "vc_cause_effect",
   "prerequisiteId": "root_hsk13_grammar"
  },
  {
   "topicId": "vc_adjustment_change",
   "prerequisiteId": "root_hsk13_vocab"
  },
  {
   "topicId": "vc_adjustment_change",
   "prerequisiteId": "root_hsk13_grammar"
  },
  {
   "topicId": "vc_financial_numbers",
   "prerequisiteId": "root_hsk13_vocab"
  },
  {
   "topicId": "vc_financial_numbers",
   "prerequisiteId": "root_hsk13_grammar"
  },
  {
   "topicId": "vc_financial_numbers",
   "prerequisiteId": "h2_gr_large_numbers"
  },
  {
   "topicId": "vc_abstract_concepts",
   "prerequisiteId": "root_hsk13_vocab"
  },
  {
   "topicId": "vc_abstract_concepts",
   "prerequisiteId": "root_hsk13_grammar"
  },
  {
   "topicId": "vc_abstract_concepts",
   "prerequisiteId": "h3_vc_abstract_nouns"
  },
  {
   "topicId": "vc_writing_study",
   "prerequisiteId": "root_hsk13_vocab"
  },
  {
   "topicId": "vc_writing_study",
   "prerequisiteId": "root_hsk13_grammar"
  },
  {
   "topicId": "vc_writing_study",
   "prerequisiteId": "h3_vc_school_study"
  },
  {
   "topicId": "vc_approval_evaluation",
   "prerequisiteId": "root_hsk13_vocab"
  },
  {
   "topicId": "vc_approval_evaluation",
   "prerequisiteId": "root_hsk13_grammar"
  },
  {
   "topicId": "vc_approval_evaluation",
   "prerequisiteId": "h3_vc_evaluative_adverbs"
  },
  {
   "topicId": "vc_physical_sensations",
   "prerequisiteId": "root_hsk13_vocab"
  },
  {
   "topicId": "vc_physical_sensations",
   "prerequisiteId": "root_hsk13_grammar"
  },
  {
   "topicId": "vc_daily_routine",
   "prerequisiteId": "root_hsk13_vocab"
  },
  {
   "topicId": "vc_daily_routine",
   "prerequisiteId": "root_hsk13_grammar"
  },
  {
   "topicId": "vc_daily_routine",
   "prerequisiteId": "h3_vc_daily_actions"
  },
  {
   "topicId": "vc_animals_nature",
   "prerequisiteId": "root_hsk13_vocab"
  },
  {
   "topicId": "vc_animals_nature",
   "prerequisiteId": "root_hsk13_grammar"
  },
  {
   "topicId": "vc_career_education_adv",
   "prerequisiteId": "root_hsk13_vocab"
  },
  {
   "topicId": "vc_career_education_adv",
   "prerequisiteId": "root_hsk13_grammar"
  },
  {
   "topicId": "vc_expressions_phrases",
   "prerequisiteId": "root_hsk13_vocab"
  },
  {
   "topicId": "vc_expressions_phrases",
   "prerequisiteId": "root_hsk13_grammar"
  },
  {
   "topicId": "vc_formal_register",
   "prerequisiteId": "root_hsk13_vocab"
  },
  {
   "topicId": "vc_formal_register",
   "prerequisiteId": "root_hsk13_grammar"
  },
  {
   "topicId": "vc_requests_permission",
   "prerequisiteId": "root_hsk13_vocab"
  },
  {
   "topicId": "vc_requests_permission",
   "prerequisiteId": "root_hsk13_grammar"
  },
  {
   "topicId": "vc_requests_permission",
   "prerequisiteId": "h2_gr_modal_verbs"
  },
  {
   "topicId": "vc_media_entertainment",
   "prerequisiteId": "root_hsk13_vocab"
  },
  {
   "topicId": "vc_media_entertainment",
   "prerequisiteId": "root_hsk13_grammar"
  },
  {
   "topicId": "vc_media_entertainment",
   "prerequisiteId": "h3_vc_entertainment"
  },
  {
   "topicId": "vc_functional_particles",
   "prerequisiteId": "root_hsk13_vocab"
  },
  {
   "topicId": "vc_functional_particles",
   "prerequisiteId": "root_hsk13_grammar"
  },
  {
   "topicId": "vc_functional_particles",
   "prerequisiteId": "h3_vc_misc_function"
  },
  {
   "topicId": "vc_time_sequence",
   "prerequisiteId": "root_hsk13_vocab"
  },
  {
   "topicId": "vc_time_sequence",
   "prerequisiteId": "root_hsk13_grammar"
  },
  {
   "topicId": "vc_time_sequence",
   "prerequisiteId": "h3_vc_misc2"
  },
  {
   "topicId": "vc_interpersonal",
   "prerequisiteId": "root_hsk13_vocab"
  },
  {
   "topicId": "vc_interpersonal",
   "prerequisiteId": "root_hsk13_grammar"
  },
  {
   "topicId": "vc_cognition_language",
   "prerequisiteId": "root_hsk13_vocab"
  },
  {
   "topicId": "vc_cognition_language",
   "prerequisiteId": "root_hsk13_grammar"
  },
  {
   "topicId": "gr_le_review",
   "prerequisiteId": "root_hsk13_grammar"
  },
  {
   "topicId": "gr_le_review",
   "prerequisiteId": "root_aspect_basic"
  },
  {
   "topicId": "gr_le_review",
   "prerequisiteId": "h1_gr_le_aspect"
  },
  {
   "topicId": "gr_guo_review",
   "prerequisiteId": "root_hsk13_grammar"
  },
  {
   "topicId": "gr_guo_review",
   "prerequisiteId": "root_aspect_basic"
  },
  {
   "topicId": "gr_guo_review",
   "prerequisiteId": "h2_gr_particle_guo"
  },
  {
   "topicId": "gr_zhe",
   "prerequisiteId": "root_hsk13_grammar"
  },
  {
   "topicId": "gr_zhe",
   "prerequisiteId": "root_aspect_basic"
  },
  {
   "topicId": "gr_zhe",
   "prerequisiteId": "gr_le_review"
  },
  {
   "topicId": "gr_zhe",
   "prerequisiteId": "h2_gr_particle_zhe"
  },
  {
   "topicId": "gr_modal_dei",
   "prerequisiteId": "root_hsk13_grammar"
  },
  {
   "topicId": "gr_modal_dei",
   "prerequisiteId": "root_modal_basic"
  },
  {
   "topicId": "gr_modal_dei",
   "prerequisiteId": "h3_gr_modal_dare_need"
  },
  {
   "topicId": "gr_modal_gan",
   "prerequisiteId": "root_hsk13_grammar"
  },
  {
   "topicId": "gr_modal_gan",
   "prerequisiteId": "root_modal_basic"
  },
  {
   "topicId": "gr_modal_gan",
   "prerequisiteId": "h3_gr_modal_dare_need"
  },
  {
   "topicId": "gr_modal_renjia",
   "prerequisiteId": "root_hsk13_grammar"
  },
  {
   "topicId": "gr_modal_renjia",
   "prerequisiteId": "h3_gr_pronoun_nonq"
  },
  {
   "topicId": "gr_ba_construction",
   "prerequisiteId": "root_hsk13_grammar"
  },
  {
   "topicId": "gr_ba_construction",
   "prerequisiteId": "root_basic_sentences"
  },
  {
   "topicId": "gr_ba_construction",
   "prerequisiteId": "h3_gr_ba_sentence"
  },
  {
   "topicId": "gr_bei_construction",
   "prerequisiteId": "root_hsk13_grammar"
  },
  {
   "topicId": "gr_bei_construction",
   "prerequisiteId": "root_basic_sentences"
  },
  {
   "topicId": "gr_bei_construction",
   "prerequisiteId": "gr_ba_construction"
  },
  {
   "topicId": "gr_bei_construction",
   "prerequisiteId": "h3_gr_passive"
  },
  {
   "topicId": "gr_result_comp_basic",
   "prerequisiteId": "root_hsk13_grammar"
  },
  {
   "topicId": "gr_result_comp_basic",
   "prerequisiteId": "root_resultative_basic"
  },
  {
   "topicId": "gr_result_comp_basic",
   "prerequisiteId": "h3_gr_result_complements"
  },
  {
   "topicId": "gr_result_comp_adv",
   "prerequisiteId": "root_hsk13_grammar"
  },
  {
   "topicId": "gr_result_comp_adv",
   "prerequisiteId": "gr_result_comp_basic"
  },
  {
   "topicId": "gr_result_comp_adv",
   "prerequisiteId": "h3_gr_result_complements"
  },
  {
   "topicId": "gr_poss_comp",
   "prerequisiteId": "root_hsk13_grammar"
  },
  {
   "topicId": "gr_poss_comp",
   "prerequisiteId": "gr_result_comp_basic"
  },
  {
   "topicId": "gr_poss_comp",
   "prerequisiteId": "h3_gr_potential_complements"
  },
  {
   "topicId": "gr_dir_comp_simple",
   "prerequisiteId": "root_hsk13_grammar"
  },
  {
   "topicId": "gr_dir_comp_simple",
   "prerequisiteId": "root_resultative_basic"
  },
  {
   "topicId": "gr_dir_comp_simple",
   "prerequisiteId": "h3_gr_directional_complements"
  },
  {
   "topicId": "gr_dir_comp_complex",
   "prerequisiteId": "root_hsk13_grammar"
  },
  {
   "topicId": "gr_dir_comp_complex",
   "prerequisiteId": "gr_dir_comp_simple"
  },
  {
   "topicId": "gr_dir_comp_complex",
   "prerequisiteId": "h3_gr_directional_complements"
  },
  {
   "topicId": "gr_degree_comp",
   "prerequisiteId": "root_hsk13_grammar"
  },
  {
   "topicId": "gr_degree_comp",
   "prerequisiteId": "root_resultative_basic"
  },
  {
   "topicId": "gr_degree_comp",
   "prerequisiteId": "h3_gr_degree_complements"
  },
  {
   "topicId": "gr_dur_comp",
   "prerequisiteId": "root_hsk13_grammar"
  },
  {
   "topicId": "gr_dur_comp",
   "prerequisiteId": "gr_le_review"
  },
  {
   "topicId": "gr_dur_comp",
   "prerequisiteId": "h3_gr_duration_frequency"
  },
  {
   "topicId": "gr_freq_comp",
   "prerequisiteId": "root_hsk13_grammar"
  },
  {
   "topicId": "gr_freq_comp",
   "prerequisiteId": "root_measure_basic"
  },
  {
   "topicId": "gr_shi_de",
   "prerequisiteId": "root_hsk13_grammar"
  },
  {
   "topicId": "gr_shi_de",
   "prerequisiteId": "root_aspect_basic"
  },
  {
   "topicId": "gr_shi_de",
   "prerequisiteId": "gr_le_review"
  },
  {
   "topicId": "gr_shi_de",
   "prerequisiteId": "h2_gr_shi_de"
  },
  {
   "topicId": "gr_yue_yue",
   "prerequisiteId": "root_hsk13_grammar"
  },
  {
   "topicId": "gr_yue_yue",
   "prerequisiteId": "root_comparison_basic"
  },
  {
   "topicId": "gr_yue_lai_yue",
   "prerequisiteId": "root_hsk13_grammar"
  },
  {
   "topicId": "gr_yue_lai_yue",
   "prerequisiteId": "gr_yue_yue"
  },
  {
   "topicId": "gr_yue_lai_yue",
   "prerequisiteId": "h2_gr_fixed_patterns"
  },
  {
   "topicId": "gr_lian_dou",
   "prerequisiteId": "root_hsk13_grammar"
  },
  {
   "topicId": "gr_lian_dou",
   "prerequisiteId": "root_modal_basic"
  },
  {
   "topicId": "gr_budan_erqie",
   "prerequisiteId": "root_hsk13_grammar"
  },
  {
   "topicId": "gr_budan_erqie",
   "prerequisiteId": "vc_conjunctions"
  },
  {
   "topicId": "gr_budan_erqie",
   "prerequisiteId": "h3_gr_complex_sentences"
  },
  {
   "topicId": "gr_suiran_danshi",
   "prerequisiteId": "root_hsk13_grammar"
  },
  {
   "topicId": "gr_suiran_danshi",
   "prerequisiteId": "vc_conjunctions"
  },
  {
   "topicId": "gr_suiran_danshi",
   "prerequisiteId": "h2_gr_complex_concessive"
  },
  {
   "topicId": "gr_zhiyao_cai",
   "prerequisiteId": "root_hsk13_grammar"
  },
  {
   "topicId": "gr_zhiyao_cai",
   "prerequisiteId": "vc_conjunctions"
  },
  {
   "topicId": "gr_zhiyao_cai",
   "prerequisiteId": "h3_gr_complex_sentences"
  },
  {
   "topicId": "gr_yi_jiu",
   "prerequisiteId": "root_hsk13_grammar"
  },
  {
   "topicId": "gr_yi_jiu",
   "prerequisiteId": "root_aspect_basic"
  },
  {
   "topicId": "gr_yi_jiu",
   "prerequisiteId": "h2_gr_yijiu"
  },
  {
   "topicId": "gr_you_you",
   "prerequisiteId": "root_hsk13_grammar"
  },
  {
   "topicId": "gr_fei_buke",
   "prerequisiteId": "root_hsk13_grammar"
  },
  {
   "topicId": "gr_fei_buke",
   "prerequisiteId": "gr_modal_dei"
  },
  {
   "topicId": "gr_jiu_ye",
   "prerequisiteId": "root_hsk13_grammar"
  },
  {
   "topicId": "gr_jiu_ye",
   "prerequisiteId": "vc_conjunctions"
  },
  {
   "topicId": "gr_que_dao",
   "prerequisiteId": "root_hsk13_grammar"
  },
  {
   "topicId": "gr_que_dao",
   "prerequisiteId": "vc_conjunctions"
  },
  {
   "topicId": "gr_jinguan",
   "prerequisiteId": "root_hsk13_grammar"
  },
  {
   "topicId": "gr_jinguan",
   "prerequisiteId": "vc_conjunctions"
  },
  {
   "topicId": "gr_nandao",
   "prerequisiteId": "root_hsk13_grammar"
  },
  {
   "topicId": "gr_hedging",
   "prerequisiteId": "root_hsk13_grammar"
  },
  {
   "topicId": "gr_hedging",
   "prerequisiteId": "vc_modal_adverbs"
  },
  {
   "topicId": "gr_hedging",
   "prerequisiteId": "h3_gr_modal_adverbs"
  },
  {
   "topicId": "gr_wulun",
   "prerequisiteId": "root_hsk13_grammar"
  },
  {
   "topicId": "gr_wulun",
   "prerequisiteId": "vc_conjunctions"
  },
  {
   "topicId": "gr_jiran",
   "prerequisiteId": "root_hsk13_grammar"
  },
  {
   "topicId": "gr_jiran",
   "prerequisiteId": "vc_conjunctions"
  },
  {
   "topicId": "gr_bi_extended",
   "prerequisiteId": "root_hsk13_grammar"
  },
  {
   "topicId": "gr_bi_extended",
   "prerequisiteId": "root_comparison_basic"
  },
  {
   "topicId": "gr_bi_extended",
   "prerequisiteId": "h3_gr_comparison_extended"
  },
  {
   "topicId": "gr_mei_bi",
   "prerequisiteId": "root_hsk13_grammar"
  },
  {
   "topicId": "gr_mei_bi",
   "prerequisiteId": "root_comparison_basic"
  },
  {
   "topicId": "gr_mei_bi",
   "prerequisiteId": "gr_bi_extended"
  },
  {
   "topicId": "gr_gen_yiyang",
   "prerequisiteId": "root_hsk13_grammar"
  },
  {
   "topicId": "gr_gen_yiyang",
   "prerequisiteId": "root_comparison_basic"
  },
  {
   "topicId": "gr_gen_yiyang",
   "prerequisiteId": "h2_gr_comparison_gen"
  },
  {
   "topicId": "gr_separable_verbs",
   "prerequisiteId": "root_hsk13_grammar"
  },
  {
   "topicId": "gr_separable_verbs",
   "prerequisiteId": "root_basic_sentences"
  },
  {
   "topicId": "gr_separable_verbs",
   "prerequisiteId": "h3_gr_separable_verbs"
  },
  {
   "topicId": "gr_topic_comment",
   "prerequisiteId": "root_hsk13_grammar"
  },
  {
   "topicId": "gr_topic_comment",
   "prerequisiteId": "root_basic_sentences"
  },
  {
   "topicId": "gr_topic_comment",
   "prerequisiteId": "h3_gr_topic_comment"
  },
  {
   "topicId": "gr_pivot_causative",
   "prerequisiteId": "root_hsk13_grammar"
  },
  {
   "topicId": "gr_pivot_causative",
   "prerequisiteId": "gr_ba_construction"
  },
  {
   "topicId": "gr_pivot_causative",
   "prerequisiteId": "h3_gr_pivot_sentence"
  },
  {
   "topicId": "gr_existential",
   "prerequisiteId": "root_hsk13_grammar"
  },
  {
   "topicId": "gr_existential",
   "prerequisiteId": "gr_zhe"
  },
  {
   "topicId": "gr_existential",
   "prerequisiteId": "h1_vc_location"
  },
  {
   "topicId": "gr_existential",
   "prerequisiteId": "h2_gr_existential_sentences"
  },
  {
   "topicId": "gr_measure_borrowed",
   "prerequisiteId": "root_hsk13_grammar"
  },
  {
   "topicId": "gr_measure_borrowed",
   "prerequisiteId": "root_measure_basic"
  },
  {
   "topicId": "gr_measure_borrowed",
   "prerequisiteId": "h3_gr_classifiers"
  },
  {
   "topicId": "gr_measure_action",
   "prerequisiteId": "root_hsk13_grammar"
  },
  {
   "topicId": "gr_measure_action",
   "prerequisiteId": "root_measure_basic"
  },
  {
   "topicId": "gr_measure_action",
   "prerequisiteId": "gr_freq_comp"
  },
  {
   "topicId": "gr_measure_containers",
   "prerequisiteId": "root_hsk13_grammar"
  },
  {
   "topicId": "gr_measure_containers",
   "prerequisiteId": "root_measure_basic"
  },
  {
   "topicId": "gr_adv_degree",
   "prerequisiteId": "root_hsk13_grammar"
  },
  {
   "topicId": "gr_adv_degree",
   "prerequisiteId": "vc_degree_scope"
  },
  {
   "topicId": "gr_adv_degree",
   "prerequisiteId": "h3_gr_degree_adverbs"
  },
  {
   "topicId": "gr_adv_scope",
   "prerequisiteId": "root_hsk13_grammar"
  },
  {
   "topicId": "gr_adv_scope",
   "prerequisiteId": "vc_degree_scope"
  },
  {
   "topicId": "gr_adv_scope",
   "prerequisiteId": "h3_gr_scope_adverbs"
  },
  {
   "topicId": "gr_adv_time_nuance",
   "prerequisiteId": "root_hsk13_grammar"
  },
  {
   "topicId": "gr_adv_time_nuance",
   "prerequisiteId": "vc_time_words"
  },
  {
   "topicId": "gr_adv_time_nuance",
   "prerequisiteId": "h3_gr_time_adverbs"
  },
  {
   "topicId": "gr_adv_attitude",
   "prerequisiteId": "root_hsk13_grammar"
  },
  {
   "topicId": "gr_adv_attitude",
   "prerequisiteId": "vc_modal_adverbs"
  },
  {
   "topicId": "gr_adv_attitude",
   "prerequisiteId": "h3_gr_modal_adverbs"
  },
  {
   "topicId": "gr_prep_anzhao",
   "prerequisiteId": "root_hsk13_grammar"
  },
  {
   "topicId": "gr_prep_duiyu",
   "prerequisiteId": "root_hsk13_grammar"
  },
  {
   "topicId": "gr_prep_youyu",
   "prerequisiteId": "root_hsk13_grammar"
  },
  {
   "topicId": "gr_prep_youyu",
   "prerequisiteId": "vc_cause_effect"
  },
  {
   "topicId": "gr_prep_youyu",
   "prerequisiteId": "h3_gr_prep_cause_purpose"
  },
  {
   "topicId": "gr_prep_suizhe",
   "prerequisiteId": "root_hsk13_grammar"
  },
  {
   "topicId": "gr_prep_suizhe",
   "prerequisiteId": "vc_cause_effect"
  },
  {
   "topicId": "gr_approximation",
   "prerequisiteId": "root_hsk13_grammar"
  },
  {
   "topicId": "gr_approximation",
   "prerequisiteId": "vc_degree_scope"
  },
  {
   "topicId": "gr_complement_summary",
   "prerequisiteId": "gr_result_comp_basic"
  },
  {
   "topicId": "gr_complement_summary",
   "prerequisiteId": "gr_poss_comp"
  },
  {
   "topicId": "gr_complement_summary",
   "prerequisiteId": "gr_dir_comp_complex"
  },
  {
   "topicId": "gr_complement_summary",
   "prerequisiteId": "gr_degree_comp"
  },
  {
   "topicId": "gr_complement_summary",
   "prerequisiteId": "gr_dur_comp"
  },
  {
   "topicId": "gr_complement_summary",
   "prerequisiteId": "gr_freq_comp"
  },
  {
   "topicId": "gr_pattern_summary",
   "prerequisiteId": "gr_ba_construction"
  },
  {
   "topicId": "gr_pattern_summary",
   "prerequisiteId": "gr_bei_construction"
  },
  {
   "topicId": "gr_pattern_summary",
   "prerequisiteId": "gr_shi_de"
  },
  {
   "topicId": "gr_pattern_summary",
   "prerequisiteId": "gr_yue_yue"
  },
  {
   "topicId": "gr_pattern_summary",
   "prerequisiteId": "gr_lian_dou"
  },
  {
   "topicId": "gr_pattern_summary",
   "prerequisiteId": "gr_wulun"
  },
  {
   "topicId": "gr_formal_register",
   "prerequisiteId": "root_hsk13_grammar"
  },
  {
   "topicId": "gr_formal_register",
   "prerequisiteId": "vc_formal_register"
  },
  {
   "topicId": "gr_formal_register",
   "prerequisiteId": "gr_prep_duiyu"
  },
  {
   "topicId": "sk_ordering_task",
   "prerequisiteId": "root_hsk13_grammar"
  },
  {
   "topicId": "sk_ordering_task",
   "prerequisiteId": "gr_complement_summary"
  },
  {
   "topicId": "sk_ordering_task",
   "prerequisiteId": "gr_pattern_summary"
  },
  {
   "topicId": "sk_reading_detail",
   "prerequisiteId": "root_hsk13_vocab"
  },
  {
   "topicId": "sk_reading_detail",
   "prerequisiteId": "vc_language_media"
  },
  {
   "topicId": "sk_reading_detail",
   "prerequisiteId": "gr_topic_comment"
  },
  {
   "topicId": "sk_reading_main",
   "prerequisiteId": "sk_reading_detail"
  },
  {
   "topicId": "sk_reading_main",
   "prerequisiteId": "gr_formal_register"
  },
  {
   "topicId": "sk_reading_main",
   "prerequisiteId": "h3_sk_inference"
  },
  {
   "topicId": "sk_speed_reading",
   "prerequisiteId": "sk_reading_detail"
  },
  {
   "topicId": "sk_speed_reading",
   "prerequisiteId": "vc_writing_study"
  },
  {
   "topicId": "sk_near_synonyms",
   "prerequisiteId": "root_hsk13_vocab"
  },
  {
   "topicId": "sk_near_synonyms",
   "prerequisiteId": "vc_degree_scope"
  },
  {
   "topicId": "sk_near_synonyms",
   "prerequisiteId": "vc_modal_adverbs"
  },
  {
   "topicId": "sk_near_synonyms",
   "prerequisiteId": "vc_time_words"
  },
  {
   "topicId": "sk_near_synonyms",
   "prerequisiteId": "vc_formal_register"
  },
  {
   "topicId": "sk_error_sentences",
   "prerequisiteId": "gr_complement_summary"
  },
  {
   "topicId": "sk_error_sentences",
   "prerequisiteId": "gr_ba_construction"
  },
  {
   "topicId": "sk_error_sentences",
   "prerequisiteId": "gr_bei_construction"
  },
  {
   "topicId": "sk_error_sentences",
   "prerequisiteId": "gr_le_review"
  },
  {
   "topicId": "sk_error_sentences",
   "prerequisiteId": "gr_bi_extended"
  },
  {
   "topicId": "sk_error_sentences",
   "prerequisiteId": "gr_separable_verbs"
  },
  {
   "topicId": "sk_error_sentences",
   "prerequisiteId": "h3_sk_grammar_patterns"
  },
  {
   "topicId": "sk_convo_question_patterns",
   "prerequisiteId": "root_hsk13_vocab"
  },
  {
   "topicId": "sk_convo_question_patterns",
   "prerequisiteId": "gr_topic_comment"
  },
  {
   "topicId": "sk_convo_question_patterns",
   "prerequisiteId": "vc_attitude_opinion"
  },
  {
   "topicId": "sk_convo_daily",
   "prerequisiteId": "sk_convo_question_patterns"
  },
  {
   "topicId": "sk_convo_daily",
   "prerequisiteId": "vc_social_relations"
  },
  {
   "topicId": "sk_convo_daily",
   "prerequisiteId": "vc_dining_social"
  },
  {
   "topicId": "sk_convo_opinion",
   "prerequisiteId": "sk_convo_daily"
  },
  {
   "topicId": "sk_convo_opinion",
   "prerequisiteId": "gr_que_dao"
  },
  {
   "topicId": "sk_convo_opinion",
   "prerequisiteId": "gr_suiran_danshi"
  },
  {
   "topicId": "sk_convo_opinion",
   "prerequisiteId": "vc_attitude_opinion"
  },
  {
   "topicId": "sk_exam_strategy",
   "prerequisiteId": "sk_ordering_task"
  },
  {
   "topicId": "sk_exam_strategy",
   "prerequisiteId": "sk_reading_main"
  },
  {
   "topicId": "sk_exam_strategy",
   "prerequisiteId": "sk_near_synonyms"
  },
  {
   "topicId": "sk_exam_strategy",
   "prerequisiteId": "sk_convo_opinion"
  },
  {
   "topicId": "h0_my_name",
   "prerequisiteId": "h0_hello"
  },
  {
   "topicId": "h0_where_from",
   "prerequisiteId": "h0_my_name"
  },
  {
   "topicId": "h0_first_question",
   "prerequisiteId": "h0_where_from"
  },
  {
   "topicId": "h0_qf_survival_kit",
   "prerequisiteId": "h0_hello"
  },
  {
   "topicId": "h0_qf_keep_talking",
   "prerequisiteId": "h0_first_question"
  },
  {
   "topicId": "h0_found_syllables",
   "prerequisiteId": "h0_root_tones"
  },
  {
   "topicId": "h0_found_syllables",
   "prerequisiteId": "h0_root_pinyin"
  },
  {
   "topicId": "h0_found_radicals",
   "prerequisiteId": "h0_root_strokes"
  },
  {
   "topicId": "h0_found_hanzi_anatomy",
   "prerequisiteId": "h0_found_radicals"
  },
  {
   "topicId": "h0_found_first_hanzi",
   "prerequisiteId": "h0_found_syllables"
  },
  {
   "topicId": "h0_found_first_hanzi",
   "prerequisiteId": "h0_found_hanzi_anatomy"
  },
  {
   "topicId": "h0_found_word_order",
   "prerequisiteId": "h0_found_syllables"
  },
  {
   "topicId": "h0_found_tone_pairs",
   "prerequisiteId": "h0_root_tones"
  },
  {
   "topicId": "h0_found_tone_pairs",
   "prerequisiteId": "h0_found_syllables"
  },
  {
   "topicId": "h0_found_typing",
   "prerequisiteId": "h0_found_syllables"
  },
  {
   "topicId": "h0_found_typing",
   "prerequisiteId": "h0_found_first_hanzi"
  },
  {
   "topicId": "h0_found_survival_chunks",
   "prerequisiteId": "h0_found_syllables"
  },
  {
   "topicId": "h0_sk_first_sentences",
   "prerequisiteId": "h0_found_word_order"
  },
  {
   "topicId": "h0_sk_first_sentences",
   "prerequisiteId": "h0_found_first_hanzi"
  },
  {
   "topicId": "h0_sk_first_sentences",
   "prerequisiteId": "h0_found_survival_chunks"
  },
  {
   "topicId": "h0_capstone",
   "prerequisiteId": "h0_sk_first_sentences"
  },
  {
   "topicId": "h0_capstone",
   "prerequisiteId": "h0_first_question"
  },
  {
   "topicId": "h0_capstone",
   "prerequisiteId": "h0_qf_survival_kit"
  },
  {
   "topicId": "h0_capstone",
   "prerequisiteId": "h0_qf_keep_talking"
  },
  {
   "topicId": "h0_capstone",
   "prerequisiteId": "h0_found_tone_pairs"
  },
  {
   "topicId": "h0_capstone",
   "prerequisiteId": "h0_found_radicals"
  },
  {
   "topicId": "h1_root_vocab",
   "prerequisiteId": "h0_capstone"
  },
  {
   "topicId": "h1_root_grammar",
   "prerequisiteId": "h0_capstone"
  },
  {
   "topicId": "h1_vc_pronouns",
   "prerequisiteId": "h1_root_vocab"
  },
  {
   "topicId": "h1_vc_numbers",
   "prerequisiteId": "h1_root_vocab"
  },
  {
   "topicId": "h1_vc_numbers",
   "prerequisiteId": "h0_found_first_hanzi"
  },
  {
   "topicId": "h1_vc_family",
   "prerequisiteId": "h1_root_vocab"
  },
  {
   "topicId": "h1_vc_time",
   "prerequisiteId": "h1_root_vocab"
  },
  {
   "topicId": "h1_vc_time",
   "prerequisiteId": "h1_vc_numbers"
  },
  {
   "topicId": "h1_vc_places",
   "prerequisiteId": "h1_root_vocab"
  },
  {
   "topicId": "h1_vc_food",
   "prerequisiteId": "h1_root_vocab"
  },
  {
   "topicId": "h1_vc_transport_tech",
   "prerequisiteId": "h1_root_vocab"
  },
  {
   "topicId": "h1_vc_education",
   "prerequisiteId": "h1_root_vocab"
  },
  {
   "topicId": "h1_vc_actions",
   "prerequisiteId": "h1_root_vocab"
  },
  {
   "topicId": "h1_vc_adjectives",
   "prerequisiteId": "h1_root_vocab"
  },
  {
   "topicId": "h1_vc_question_words",
   "prerequisiteId": "h1_root_vocab"
  },
  {
   "topicId": "h1_vc_question_words",
   "prerequisiteId": "h1_vc_pronouns"
  },
  {
   "topicId": "h1_vc_function_words",
   "prerequisiteId": "h1_root_grammar"
  },
  {
   "topicId": "h1_vc_measure_words",
   "prerequisiteId": "h1_root_vocab"
  },
  {
   "topicId": "h1_vc_measure_words",
   "prerequisiteId": "h1_vc_numbers"
  },
  {
   "topicId": "h1_vc_social",
   "prerequisiteId": "h1_root_vocab"
  },
  {
   "topicId": "h1_vc_social",
   "prerequisiteId": "h1_vc_pronouns"
  },
  {
   "topicId": "h1_vc_social",
   "prerequisiteId": "h0_hello"
  },
  {
   "topicId": "h1_vc_location",
   "prerequisiteId": "h1_root_vocab"
  },
  {
   "topicId": "h1_vc_objects",
   "prerequisiteId": "h1_root_vocab"
  },
  {
   "topicId": "h1_vc_verbs2",
   "prerequisiteId": "h1_root_vocab"
  },
  {
   "topicId": "h1_vc_verbs2",
   "prerequisiteId": "h1_vc_pronouns"
  },
  {
   "topicId": "h1_gr_shi_sentence",
   "prerequisiteId": "h1_root_grammar"
  },
  {
   "topicId": "h1_gr_shi_sentence",
   "prerequisiteId": "h1_vc_pronouns"
  },
  {
   "topicId": "h1_gr_shi_sentence",
   "prerequisiteId": "h1_vc_verbs2"
  },
  {
   "topicId": "h1_gr_you_sentence",
   "prerequisiteId": "h1_root_grammar"
  },
  {
   "topicId": "h1_gr_you_sentence",
   "prerequisiteId": "h1_vc_pronouns"
  },
  {
   "topicId": "h1_gr_you_sentence",
   "prerequisiteId": "h1_vc_verbs2"
  },
  {
   "topicId": "h1_gr_negation",
   "prerequisiteId": "h1_root_grammar"
  },
  {
   "topicId": "h1_gr_negation",
   "prerequisiteId": "h1_vc_function_words"
  },
  {
   "topicId": "h1_gr_ma_questions",
   "prerequisiteId": "h1_root_grammar"
  },
  {
   "topicId": "h1_gr_ma_questions",
   "prerequisiteId": "h1_vc_function_words"
  },
  {
   "topicId": "h1_gr_ma_questions",
   "prerequisiteId": "h0_found_word_order"
  },
  {
   "topicId": "h1_gr_wh_questions",
   "prerequisiteId": "h1_root_grammar"
  },
  {
   "topicId": "h1_gr_wh_questions",
   "prerequisiteId": "h1_vc_question_words"
  },
  {
   "topicId": "h1_gr_wh_questions",
   "prerequisiteId": "h0_found_word_order"
  },
  {
   "topicId": "h1_gr_haishi_questions",
   "prerequisiteId": "h1_root_grammar"
  },
  {
   "topicId": "h1_gr_haishi_questions",
   "prerequisiteId": "h1_vc_question_words"
  },
  {
   "topicId": "h1_gr_haishi_questions",
   "prerequisiteId": "h1_gr_ma_questions"
  },
  {
   "topicId": "h1_gr_haishi_questions",
   "prerequisiteId": "h0_first_question"
  },
  {
   "topicId": "h1_gr_affneg_questions",
   "prerequisiteId": "h1_gr_negation"
  },
  {
   "topicId": "h1_gr_affneg_questions",
   "prerequisiteId": "h1_gr_ma_questions"
  },
  {
   "topicId": "h1_gr_affneg_questions",
   "prerequisiteId": "h0_found_word_order"
  },
  {
   "topicId": "h1_gr_de_possession",
   "prerequisiteId": "h1_root_grammar"
  },
  {
   "topicId": "h1_gr_de_possession",
   "prerequisiteId": "h1_vc_function_words"
  },
  {
   "topicId": "h1_gr_le_aspect",
   "prerequisiteId": "h1_root_grammar"
  },
  {
   "topicId": "h1_gr_le_aspect",
   "prerequisiteId": "h1_vc_function_words"
  },
  {
   "topicId": "h1_gr_le_aspect",
   "prerequisiteId": "h1_vc_actions"
  },
  {
   "topicId": "h1_gr_progressive",
   "prerequisiteId": "h1_gr_le_aspect"
  },
  {
   "topicId": "h1_gr_progressive",
   "prerequisiteId": "h1_vc_actions"
  },
  {
   "topicId": "h1_gr_progressive",
   "prerequisiteId": "h1_vc_function_words"
  },
  {
   "topicId": "h1_gr_modal_hui_neng",
   "prerequisiteId": "h1_root_grammar"
  },
  {
   "topicId": "h1_gr_modal_hui_neng",
   "prerequisiteId": "h1_vc_verbs2"
  },
  {
   "topicId": "h1_gr_modal_xiang_yao",
   "prerequisiteId": "h1_root_grammar"
  },
  {
   "topicId": "h1_gr_modal_xiang_yao",
   "prerequisiteId": "h1_vc_adjectives"
  },
  {
   "topicId": "h1_gr_location_zai",
   "prerequisiteId": "h1_root_grammar"
  },
  {
   "topicId": "h1_gr_location_zai",
   "prerequisiteId": "h1_vc_location"
  },
  {
   "topicId": "h1_gr_location_zai",
   "prerequisiteId": "h1_vc_places"
  },
  {
   "topicId": "h1_gr_direction_words",
   "prerequisiteId": "h1_gr_location_zai"
  },
  {
   "topicId": "h1_gr_direction_words",
   "prerequisiteId": "h1_vc_location"
  },
  {
   "topicId": "h1_gr_num_measure",
   "prerequisiteId": "h1_vc_numbers"
  },
  {
   "topicId": "h1_gr_num_measure",
   "prerequisiteId": "h1_vc_measure_words"
  },
  {
   "topicId": "h1_gr_time_expressions",
   "prerequisiteId": "h1_vc_time"
  },
  {
   "topicId": "h1_gr_time_expressions",
   "prerequisiteId": "h1_gr_num_measure"
  },
  {
   "topicId": "h1_gr_degree_adverbs",
   "prerequisiteId": "h1_root_grammar"
  },
  {
   "topicId": "h1_gr_degree_adverbs",
   "prerequisiteId": "h1_vc_function_words"
  },
  {
   "topicId": "h1_gr_degree_adverbs",
   "prerequisiteId": "h1_vc_adjectives"
  },
  {
   "topicId": "h1_gr_scope_adverbs",
   "prerequisiteId": "h1_root_grammar"
  },
  {
   "topicId": "h1_gr_scope_adverbs",
   "prerequisiteId": "h1_vc_function_words"
  },
  {
   "topicId": "h1_gr_comparison",
   "prerequisiteId": "h1_gr_negation"
  },
  {
   "topicId": "h1_gr_comparison",
   "prerequisiteId": "h1_vc_adjectives"
  },
  {
   "topicId": "h1_gr_adj_predicate",
   "prerequisiteId": "h1_root_grammar"
  },
  {
   "topicId": "h1_gr_adj_predicate",
   "prerequisiteId": "h1_vc_adjectives"
  },
  {
   "topicId": "h1_gr_adj_predicate",
   "prerequisiteId": "h1_gr_degree_adverbs"
  },
  {
   "topicId": "h1_gr_and_conjunctions",
   "prerequisiteId": "h1_root_grammar"
  },
  {
   "topicId": "h1_gr_and_conjunctions",
   "prerequisiteId": "h1_vc_function_words"
  },
  {
   "topicId": "h1_gr_money_time_numbers",
   "prerequisiteId": "h1_vc_numbers"
  },
  {
   "topicId": "h1_gr_money_time_numbers",
   "prerequisiteId": "h1_vc_time"
  },
  {
   "topicId": "h1_gr_money_time_numbers",
   "prerequisiteId": "h1_vc_measure_words"
  },
  {
   "topicId": "h1_sk_read_dialogues",
   "prerequisiteId": "h1_gr_shi_sentence"
  },
  {
   "topicId": "h1_sk_read_dialogues",
   "prerequisiteId": "h1_gr_you_sentence"
  },
  {
   "topicId": "h1_sk_read_dialogues",
   "prerequisiteId": "h1_gr_ma_questions"
  },
  {
   "topicId": "h1_sk_read_dialogues",
   "prerequisiteId": "h1_gr_wh_questions"
  },
  {
   "topicId": "h1_sk_read_dialogues",
   "prerequisiteId": "h1_vc_social"
  },
  {
   "topicId": "h1_sk_read_dialogues",
   "prerequisiteId": "h1_vc_pronouns"
  },
  {
   "topicId": "h1_sk_read_notices",
   "prerequisiteId": "h1_gr_location_zai"
  },
  {
   "topicId": "h1_sk_read_notices",
   "prerequisiteId": "h1_gr_time_expressions"
  },
  {
   "topicId": "h1_sk_read_notices",
   "prerequisiteId": "h1_gr_num_measure"
  },
  {
   "topicId": "h1_sk_read_notices",
   "prerequisiteId": "h1_vc_places"
  },
  {
   "topicId": "h1_sk_read_notices",
   "prerequisiteId": "h1_vc_transport_tech"
  },
  {
   "topicId": "h1_sk_read_sentences",
   "prerequisiteId": "h1_gr_le_aspect"
  },
  {
   "topicId": "h1_sk_read_sentences",
   "prerequisiteId": "h1_gr_progressive"
  },
  {
   "topicId": "h1_sk_read_sentences",
   "prerequisiteId": "h1_gr_comparison"
  },
  {
   "topicId": "h1_sk_read_sentences",
   "prerequisiteId": "h1_gr_adj_predicate"
  },
  {
   "topicId": "h1_sk_read_sentences",
   "prerequisiteId": "h1_gr_de_possession"
  },
  {
   "topicId": "h1_sk_read_sentences",
   "prerequisiteId": "h1_gr_modal_hui_neng"
  },
  {
   "topicId": "h1_sk_read_sentences",
   "prerequisiteId": "h1_gr_and_conjunctions"
  },
  {
   "topicId": "h1_capstone",
   "prerequisiteId": "h1_sk_read_dialogues"
  },
  {
   "topicId": "h1_capstone",
   "prerequisiteId": "h1_sk_read_notices"
  },
  {
   "topicId": "h1_capstone",
   "prerequisiteId": "h1_sk_read_sentences"
  },
  {
   "topicId": "h1_capstone",
   "prerequisiteId": "h1_gr_haishi_questions"
  },
  {
   "topicId": "h1_capstone",
   "prerequisiteId": "h1_gr_affneg_questions"
  },
  {
   "topicId": "h1_capstone",
   "prerequisiteId": "h1_gr_money_time_numbers"
  },
  {
   "topicId": "h1_capstone",
   "prerequisiteId": "h1_gr_direction_words"
  },
  {
   "topicId": "h1_capstone",
   "prerequisiteId": "h1_qf_ma"
  },
  {
   "topicId": "h1_capstone",
   "prerequisiteId": "h1_qf_ne"
  },
  {
   "topicId": "h1_capstone",
   "prerequisiteId": "h1_qf_shenme"
  },
  {
   "topicId": "h1_capstone",
   "prerequisiteId": "h1_qf_shei"
  },
  {
   "topicId": "h1_capstone",
   "prerequisiteId": "h1_qf_nar"
  },
  {
   "topicId": "h1_capstone",
   "prerequisiteId": "h1_qf_jiduoshao"
  },
  {
   "topicId": "h1_capstone",
   "prerequisiteId": "h1_qf_zenme"
  },
  {
   "topicId": "h1_capstone",
   "prerequisiteId": "h1_qf_haishi"
  },
  {
   "topicId": "h1_capstone",
   "prerequisiteId": "h1_qf_a_not_a"
  },
  {
   "topicId": "h1_qf_ma",
   "prerequisiteId": "h1_gr_ma_questions"
  },
  {
   "topicId": "h1_qf_ne",
   "prerequisiteId": "h1_vc_function_words"
  },
  {
   "topicId": "h1_qf_ne",
   "prerequisiteId": "h0_qf_keep_talking"
  },
  {
   "topicId": "h1_qf_shenme",
   "prerequisiteId": "h1_gr_wh_questions"
  },
  {
   "topicId": "h1_qf_shei",
   "prerequisiteId": "h1_gr_wh_questions"
  },
  {
   "topicId": "h1_qf_shei",
   "prerequisiteId": "h1_vc_family"
  },
  {
   "topicId": "h1_qf_nar",
   "prerequisiteId": "h1_gr_wh_questions"
  },
  {
   "topicId": "h1_qf_nar",
   "prerequisiteId": "h1_gr_location_zai"
  },
  {
   "topicId": "h1_qf_nar",
   "prerequisiteId": "h1_vc_places"
  },
  {
   "topicId": "h1_qf_jiduoshao",
   "prerequisiteId": "h1_gr_num_measure"
  },
  {
   "topicId": "h1_qf_jiduoshao",
   "prerequisiteId": "h1_vc_question_words"
  },
  {
   "topicId": "h1_qf_zenme",
   "prerequisiteId": "h1_gr_wh_questions"
  },
  {
   "topicId": "h1_qf_zenme",
   "prerequisiteId": "h1_vc_adjectives"
  },
  {
   "topicId": "h1_qf_haishi",
   "prerequisiteId": "h1_gr_haishi_questions"
  },
  {
   "topicId": "h1_qf_haishi",
   "prerequisiteId": "h1_vc_food"
  },
  {
   "topicId": "h1_qf_a_not_a",
   "prerequisiteId": "h1_gr_affneg_questions"
  },
  {
   "topicId": "h1_char_01",
   "prerequisiteId": "h0_found_first_hanzi"
  },
  {
   "topicId": "h1_char_02",
   "prerequisiteId": "h1_char_01"
  },
  {
   "topicId": "h1_char_03",
   "prerequisiteId": "h1_char_02"
  },
  {
   "topicId": "h1_char_04",
   "prerequisiteId": "h1_char_03"
  },
  {
   "topicId": "h1_char_05",
   "prerequisiteId": "h1_char_04"
  },
  {
   "topicId": "h1_char_06",
   "prerequisiteId": "h1_char_05"
  },
  {
   "topicId": "h1_char_07",
   "prerequisiteId": "h1_char_06"
  },
  {
   "topicId": "h1_char_08",
   "prerequisiteId": "h1_char_07"
  },
  {
   "topicId": "h1_char_09",
   "prerequisiteId": "h1_char_08"
  },
  {
   "topicId": "h1_char_10",
   "prerequisiteId": "h1_char_09"
  },
  {
   "topicId": "h1_char_11",
   "prerequisiteId": "h1_char_10"
  },
  {
   "topicId": "h1_char_12",
   "prerequisiteId": "h1_char_11"
  },
  {
   "topicId": "h1_char_13",
   "prerequisiteId": "h1_char_12"
  },
  {
   "topicId": "h1_char_14",
   "prerequisiteId": "h1_char_13"
  },
  {
   "topicId": "h1_char_15",
   "prerequisiteId": "h1_char_14"
  },
  {
   "topicId": "h1_char_16",
   "prerequisiteId": "h1_char_15"
  },
  {
   "topicId": "h1_char_17",
   "prerequisiteId": "h1_char_16"
  },
  {
   "topicId": "h1_char_18",
   "prerequisiteId": "h1_char_17"
  },
  {
   "topicId": "h1_char_19",
   "prerequisiteId": "h1_char_18"
  },
  {
   "topicId": "h1_char_20",
   "prerequisiteId": "h1_char_19"
  },
  {
   "topicId": "h1_char_21",
   "prerequisiteId": "h1_char_20"
  },
  {
   "topicId": "h1_char_22",
   "prerequisiteId": "h1_char_21"
  },
  {
   "topicId": "h1_char_23",
   "prerequisiteId": "h1_char_22"
  },
  {
   "topicId": "h2_root_vocab",
   "prerequisiteId": "h1_capstone"
  },
  {
   "topicId": "h2_root_grammar",
   "prerequisiteId": "h1_capstone"
  },
  {
   "topicId": "h2_vc_family",
   "prerequisiteId": "h2_root_vocab"
  },
  {
   "topicId": "h2_vc_food_drink",
   "prerequisiteId": "h2_root_vocab"
  },
  {
   "topicId": "h2_vc_time_words",
   "prerequisiteId": "h2_root_vocab"
  },
  {
   "topicId": "h2_vc_numbers_measure",
   "prerequisiteId": "h2_root_vocab"
  },
  {
   "topicId": "h2_vc_numbers_measure",
   "prerequisiteId": "h1_vc_numbers"
  },
  {
   "topicId": "h2_vc_places_transport",
   "prerequisiteId": "h2_root_vocab"
  },
  {
   "topicId": "h2_vc_directions_position",
   "prerequisiteId": "h2_root_vocab"
  },
  {
   "topicId": "h2_vc_colors_appearance",
   "prerequisiteId": "h2_root_vocab"
  },
  {
   "topicId": "h2_vc_sports_hobbies",
   "prerequisiteId": "h2_root_vocab"
  },
  {
   "topicId": "h2_vc_daily_actions",
   "prerequisiteId": "h2_root_vocab"
  },
  {
   "topicId": "h2_vc_communication",
   "prerequisiteId": "h2_root_vocab"
  },
  {
   "topicId": "h2_vc_communication",
   "prerequisiteId": "h1_vc_transport_tech"
  },
  {
   "topicId": "h2_vc_emotions_states",
   "prerequisiteId": "h2_root_vocab"
  },
  {
   "topicId": "h2_vc_money_shopping",
   "prerequisiteId": "h2_root_vocab"
  },
  {
   "topicId": "h2_vc_speed_manner",
   "prerequisiteId": "h2_root_vocab"
  },
  {
   "topicId": "h2_vc_school_work",
   "prerequisiteId": "h2_root_vocab"
  },
  {
   "topicId": "h2_vc_conjunctions_adverbs",
   "prerequisiteId": "h2_root_vocab"
  },
  {
   "topicId": "h2_vc_health_weather",
   "prerequisiteId": "h2_root_vocab"
  },
  {
   "topicId": "h2_gr_modal_verbs",
   "prerequisiteId": "h2_root_grammar"
  },
  {
   "topicId": "h2_gr_modal_verbs",
   "prerequisiteId": "h2_vc_health_weather"
  },
  {
   "topicId": "h2_gr_modal_verbs",
   "prerequisiteId": "h2_vc_daily_actions"
  },
  {
   "topicId": "h2_gr_modal_verbs",
   "prerequisiteId": "h1_gr_modal_hui_neng"
  },
  {
   "topicId": "h2_gr_modal_verbs",
   "prerequisiteId": "h1_gr_modal_xiang_yao"
  },
  {
   "topicId": "h2_gr_verb_reduplication",
   "prerequisiteId": "h2_root_grammar"
  },
  {
   "topicId": "h2_gr_verb_reduplication",
   "prerequisiteId": "h2_vc_daily_actions"
  },
  {
   "topicId": "h2_gr_verb_reduplication",
   "prerequisiteId": "h2_vc_communication"
  },
  {
   "topicId": "h2_gr_interrogative_pronouns",
   "prerequisiteId": "h2_root_grammar"
  },
  {
   "topicId": "h2_gr_interrogative_pronouns",
   "prerequisiteId": "h2_vc_time_words"
  },
  {
   "topicId": "h2_gr_interrogative_pronouns",
   "prerequisiteId": "h2_vc_communication"
  },
  {
   "topicId": "h2_gr_interrogative_pronouns",
   "prerequisiteId": "h1_gr_wh_questions"
  },
  {
   "topicId": "h2_gr_demonstrative_adverbs",
   "prerequisiteId": "h2_root_grammar"
  },
  {
   "topicId": "h2_gr_demonstrative_adverbs",
   "prerequisiteId": "h2_vc_emotions_states"
  },
  {
   "topicId": "h2_gr_adjective_reduplication",
   "prerequisiteId": "h2_root_grammar"
  },
  {
   "topicId": "h2_gr_adjective_reduplication",
   "prerequisiteId": "h2_vc_colors_appearance"
  },
  {
   "topicId": "h2_gr_adjective_reduplication",
   "prerequisiteId": "h2_vc_emotions_states"
  },
  {
   "topicId": "h2_gr_adjective_reduplication",
   "prerequisiteId": "h1_gr_adj_predicate"
  },
  {
   "topicId": "h2_gr_large_numbers",
   "prerequisiteId": "h2_root_grammar"
  },
  {
   "topicId": "h2_gr_large_numbers",
   "prerequisiteId": "h2_vc_numbers_measure"
  },
  {
   "topicId": "h2_gr_large_numbers",
   "prerequisiteId": "h1_gr_num_measure"
  },
  {
   "topicId": "h2_gr_large_numbers",
   "prerequisiteId": "h1_vc_numbers"
  },
  {
   "topicId": "h2_gr_measure_words",
   "prerequisiteId": "h2_root_grammar"
  },
  {
   "topicId": "h2_gr_measure_words",
   "prerequisiteId": "h2_vc_numbers_measure"
  },
  {
   "topicId": "h2_gr_measure_words",
   "prerequisiteId": "h2_vc_places_transport"
  },
  {
   "topicId": "h2_gr_measure_words",
   "prerequisiteId": "h1_gr_num_measure"
  },
  {
   "topicId": "h2_gr_degree_adverbs",
   "prerequisiteId": "h2_root_grammar"
  },
  {
   "topicId": "h2_gr_degree_adverbs",
   "prerequisiteId": "h2_vc_speed_manner"
  },
  {
   "topicId": "h2_gr_degree_adverbs",
   "prerequisiteId": "h2_vc_emotions_states"
  },
  {
   "topicId": "h2_gr_degree_adverbs",
   "prerequisiteId": "h1_gr_degree_adverbs"
  },
  {
   "topicId": "h2_gr_time_adverbs",
   "prerequisiteId": "h2_root_grammar"
  },
  {
   "topicId": "h2_gr_time_adverbs",
   "prerequisiteId": "h2_vc_time_words"
  },
  {
   "topicId": "h2_gr_time_adverbs",
   "prerequisiteId": "h2_vc_daily_actions"
  },
  {
   "topicId": "h2_gr_time_adverbs",
   "prerequisiteId": "h1_gr_time_expressions"
  },
  {
   "topicId": "h2_gr_frequency_adverbs",
   "prerequisiteId": "h2_root_grammar"
  },
  {
   "topicId": "h2_gr_frequency_adverbs",
   "prerequisiteId": "h2_vc_time_words"
  },
  {
   "topicId": "h2_gr_frequency_adverbs",
   "prerequisiteId": "h1_gr_time_expressions"
  },
  {
   "topicId": "h2_gr_prepositions_direction",
   "prerequisiteId": "h2_root_grammar"
  },
  {
   "topicId": "h2_gr_prepositions_direction",
   "prerequisiteId": "h2_vc_directions_position"
  },
  {
   "topicId": "h2_gr_prepositions_direction",
   "prerequisiteId": "h2_vc_conjunctions_adverbs"
  },
  {
   "topicId": "h2_gr_prepositions_direction",
   "prerequisiteId": "h1_gr_direction_words"
  },
  {
   "topicId": "h2_gr_prepositions_direction",
   "prerequisiteId": "h1_gr_location_zai"
  },
  {
   "topicId": "h2_gr_prepositions_object",
   "prerequisiteId": "h2_root_grammar"
  },
  {
   "topicId": "h2_gr_prepositions_object",
   "prerequisiteId": "h2_vc_conjunctions_adverbs"
  },
  {
   "topicId": "h2_gr_prepositions_object",
   "prerequisiteId": "h2_vc_money_shopping"
  },
  {
   "topicId": "h2_gr_prepositions_object",
   "prerequisiteId": "h1_gr_location_zai"
  },
  {
   "topicId": "h2_gr_conjunctions",
   "prerequisiteId": "h2_root_grammar"
  },
  {
   "topicId": "h2_gr_conjunctions",
   "prerequisiteId": "h2_vc_conjunctions_adverbs"
  },
  {
   "topicId": "h2_gr_conjunctions",
   "prerequisiteId": "h1_gr_and_conjunctions"
  },
  {
   "topicId": "h2_gr_particle_de_complement",
   "prerequisiteId": "h2_root_grammar"
  },
  {
   "topicId": "h2_gr_particle_de_complement",
   "prerequisiteId": "h2_vc_conjunctions_adverbs"
  },
  {
   "topicId": "h2_gr_particle_de_complement",
   "prerequisiteId": "h2_vc_speed_manner"
  },
  {
   "topicId": "h2_gr_particle_de_complement",
   "prerequisiteId": "h1_gr_adj_predicate"
  },
  {
   "topicId": "h2_gr_particle_guo",
   "prerequisiteId": "h2_root_grammar"
  },
  {
   "topicId": "h2_gr_particle_guo",
   "prerequisiteId": "h2_vc_daily_actions"
  },
  {
   "topicId": "h2_gr_particle_guo",
   "prerequisiteId": "h2_vc_sports_hobbies"
  },
  {
   "topicId": "h2_gr_particle_guo",
   "prerequisiteId": "h1_gr_le_aspect"
  },
  {
   "topicId": "h2_gr_particle_zhe",
   "prerequisiteId": "h2_root_grammar"
  },
  {
   "topicId": "h2_gr_particle_zhe",
   "prerequisiteId": "h2_vc_conjunctions_adverbs"
  },
  {
   "topicId": "h2_gr_particle_zhe",
   "prerequisiteId": "h2_vc_daily_actions"
  },
  {
   "topicId": "h2_gr_particle_zhe",
   "prerequisiteId": "h1_gr_progressive"
  },
  {
   "topicId": "h2_gr_modal_particles",
   "prerequisiteId": "h2_root_grammar"
  },
  {
   "topicId": "h2_gr_modal_particles",
   "prerequisiteId": "h2_vc_communication"
  },
  {
   "topicId": "h2_gr_modal_particles",
   "prerequisiteId": "h1_gr_ma_questions"
  },
  {
   "topicId": "h2_gr_result_complements",
   "prerequisiteId": "h2_root_grammar"
  },
  {
   "topicId": "h2_gr_result_complements",
   "prerequisiteId": "h2_vc_daily_actions"
  },
  {
   "topicId": "h2_gr_result_complements",
   "prerequisiteId": "h2_vc_communication"
  },
  {
   "topicId": "h2_gr_directional_complements",
   "prerequisiteId": "h2_root_grammar"
  },
  {
   "topicId": "h2_gr_directional_complements",
   "prerequisiteId": "h2_vc_directions_position"
  },
  {
   "topicId": "h2_gr_directional_complements",
   "prerequisiteId": "h2_vc_daily_actions"
  },
  {
   "topicId": "h2_gr_directional_complements",
   "prerequisiteId": "h1_gr_direction_words"
  },
  {
   "topicId": "h2_gr_degree_complements",
   "prerequisiteId": "h2_gr_particle_de_complement"
  },
  {
   "topicId": "h2_gr_degree_complements",
   "prerequisiteId": "h2_vc_speed_manner"
  },
  {
   "topicId": "h2_gr_degree_complements",
   "prerequisiteId": "h1_gr_degree_adverbs"
  },
  {
   "topicId": "h2_gr_quantity_complements",
   "prerequisiteId": "h2_root_grammar"
  },
  {
   "topicId": "h2_gr_quantity_complements",
   "prerequisiteId": "h2_vc_numbers_measure"
  },
  {
   "topicId": "h2_gr_quantity_complements",
   "prerequisiteId": "h2_gr_large_numbers"
  },
  {
   "topicId": "h2_gr_noun_predicate",
   "prerequisiteId": "h2_root_grammar"
  },
  {
   "topicId": "h2_gr_noun_predicate",
   "prerequisiteId": "h2_vc_health_weather"
  },
  {
   "topicId": "h2_gr_noun_predicate",
   "prerequisiteId": "h2_vc_time_words"
  },
  {
   "topicId": "h2_gr_noun_predicate",
   "prerequisiteId": "h1_gr_shi_sentence"
  },
  {
   "topicId": "h2_gr_existential_sentences",
   "prerequisiteId": "h2_gr_particle_zhe"
  },
  {
   "topicId": "h2_gr_existential_sentences",
   "prerequisiteId": "h2_vc_places_transport"
  },
  {
   "topicId": "h2_gr_existential_sentences",
   "prerequisiteId": "h2_vc_directions_position"
  },
  {
   "topicId": "h2_gr_existential_sentences",
   "prerequisiteId": "h1_vc_location"
  },
  {
   "topicId": "h2_gr_serial_verb",
   "prerequisiteId": "h2_root_grammar"
  },
  {
   "topicId": "h2_gr_serial_verb",
   "prerequisiteId": "h2_vc_daily_actions"
  },
  {
   "topicId": "h2_gr_serial_verb",
   "prerequisiteId": "h2_vc_places_transport"
  },
  {
   "topicId": "h2_gr_comparison_bi",
   "prerequisiteId": "h2_root_grammar"
  },
  {
   "topicId": "h2_gr_comparison_bi",
   "prerequisiteId": "h2_vc_conjunctions_adverbs"
  },
  {
   "topicId": "h2_gr_comparison_bi",
   "prerequisiteId": "h2_vc_family"
  },
  {
   "topicId": "h2_gr_comparison_bi",
   "prerequisiteId": "h1_gr_comparison"
  },
  {
   "topicId": "h2_gr_comparison_gen",
   "prerequisiteId": "h2_gr_comparison_bi"
  },
  {
   "topicId": "h2_gr_comparison_gen",
   "prerequisiteId": "h2_gr_demonstrative_adverbs"
  },
  {
   "topicId": "h2_gr_comparison_gen",
   "prerequisiteId": "h1_gr_comparison"
  },
  {
   "topicId": "h2_gr_shi_de",
   "prerequisiteId": "h2_root_grammar"
  },
  {
   "topicId": "h2_gr_shi_de",
   "prerequisiteId": "h2_vc_places_transport"
  },
  {
   "topicId": "h2_gr_shi_de",
   "prerequisiteId": "h2_vc_time_words"
  },
  {
   "topicId": "h2_gr_shi_de",
   "prerequisiteId": "h1_gr_shi_sentence"
  },
  {
   "topicId": "h2_gr_double_object",
   "prerequisiteId": "h2_root_grammar"
  },
  {
   "topicId": "h2_gr_double_object",
   "prerequisiteId": "h2_vc_money_shopping"
  },
  {
   "topicId": "h2_gr_double_object",
   "prerequisiteId": "h2_vc_family"
  },
  {
   "topicId": "h2_gr_complex_sequential",
   "prerequisiteId": "h2_gr_serial_verb"
  },
  {
   "topicId": "h2_gr_complex_sequential",
   "prerequisiteId": "h2_vc_daily_actions"
  },
  {
   "topicId": "h2_gr_complex_sequential",
   "prerequisiteId": "h1_gr_and_conjunctions"
  },
  {
   "topicId": "h2_gr_complex_progressive",
   "prerequisiteId": "h2_gr_conjunctions"
  },
  {
   "topicId": "h2_gr_complex_concessive",
   "prerequisiteId": "h2_gr_conjunctions"
  },
  {
   "topicId": "h2_gr_complex_conditional",
   "prerequisiteId": "h2_gr_conjunctions"
  },
  {
   "topicId": "h2_gr_complex_causal",
   "prerequisiteId": "h2_gr_conjunctions"
  },
  {
   "topicId": "h2_gr_complex_causal",
   "prerequisiteId": "h2_vc_conjunctions_adverbs"
  },
  {
   "topicId": "h2_gr_complex_causal",
   "prerequisiteId": "h1_gr_and_conjunctions"
  },
  {
   "topicId": "h2_gr_yijiu",
   "prerequisiteId": "h2_gr_complex_sequential"
  },
  {
   "topicId": "h2_gr_ordinals_and_numbers",
   "prerequisiteId": "h2_root_grammar"
  },
  {
   "topicId": "h2_gr_ordinals_and_numbers",
   "prerequisiteId": "h2_vc_numbers_measure"
  },
  {
   "topicId": "h2_gr_ordinals_and_numbers",
   "prerequisiteId": "h2_vc_places_transport"
  },
  {
   "topicId": "h2_gr_ordinals_and_numbers",
   "prerequisiteId": "h1_gr_num_measure"
  },
  {
   "topicId": "h2_gr_ordinals_and_numbers",
   "prerequisiteId": "h1_gr_money_time_numbers"
  },
  {
   "topicId": "h2_gr_question_methods",
   "prerequisiteId": "h2_root_grammar"
  },
  {
   "topicId": "h2_gr_question_methods",
   "prerequisiteId": "h2_gr_modal_particles"
  },
  {
   "topicId": "h2_gr_question_methods",
   "prerequisiteId": "h2_vc_communication"
  },
  {
   "topicId": "h2_gr_question_methods",
   "prerequisiteId": "h1_gr_ma_questions"
  },
  {
   "topicId": "h2_gr_question_methods",
   "prerequisiteId": "h1_gr_affneg_questions"
  },
  {
   "topicId": "h2_gr_fixed_patterns",
   "prerequisiteId": "h2_root_grammar"
  },
  {
   "topicId": "h2_gr_fixed_patterns",
   "prerequisiteId": "h2_vc_emotions_states"
  },
  {
   "topicId": "h2_gr_fixed_patterns",
   "prerequisiteId": "h2_vc_speed_manner"
  },
  {
   "topicId": "h2_gr_time_clauses",
   "prerequisiteId": "h2_root_grammar"
  },
  {
   "topicId": "h2_gr_time_clauses",
   "prerequisiteId": "h2_vc_time_words"
  },
  {
   "topicId": "h2_gr_time_clauses",
   "prerequisiteId": "h2_vc_daily_actions"
  },
  {
   "topicId": "h2_gr_time_clauses",
   "prerequisiteId": "h1_gr_time_expressions"
  },
  {
   "topicId": "h2_gr_progressive",
   "prerequisiteId": "h2_root_grammar"
  },
  {
   "topicId": "h2_gr_progressive",
   "prerequisiteId": "h2_vc_conjunctions_adverbs"
  },
  {
   "topicId": "h2_gr_progressive",
   "prerequisiteId": "h2_vc_daily_actions"
  },
  {
   "topicId": "h2_gr_progressive",
   "prerequisiteId": "h1_gr_progressive"
  },
  {
   "topicId": "h2_sk_reading_paragraphs",
   "prerequisiteId": "h2_gr_complex_causal"
  },
  {
   "topicId": "h2_sk_reading_paragraphs",
   "prerequisiteId": "h2_gr_complex_concessive"
  },
  {
   "topicId": "h2_sk_reading_paragraphs",
   "prerequisiteId": "h2_gr_complex_conditional"
  },
  {
   "topicId": "h2_sk_reading_paragraphs",
   "prerequisiteId": "h2_gr_shi_de"
  },
  {
   "topicId": "h2_sk_reading_paragraphs",
   "prerequisiteId": "h2_vc_communication"
  },
  {
   "topicId": "h2_sk_scanning_notices",
   "prerequisiteId": "h2_vc_numbers_measure"
  },
  {
   "topicId": "h2_sk_scanning_notices",
   "prerequisiteId": "h2_vc_places_transport"
  },
  {
   "topicId": "h2_sk_scanning_notices",
   "prerequisiteId": "h2_gr_ordinals_and_numbers"
  },
  {
   "topicId": "h2_sk_scanning_notices",
   "prerequisiteId": "h2_vc_time_words"
  },
  {
   "topicId": "h2_sk_dialogue_reading",
   "prerequisiteId": "h2_gr_question_methods"
  },
  {
   "topicId": "h2_sk_dialogue_reading",
   "prerequisiteId": "h2_gr_modal_verbs"
  },
  {
   "topicId": "h2_sk_dialogue_reading",
   "prerequisiteId": "h2_vc_communication"
  },
  {
   "topicId": "h2_sk_dialogue_reading",
   "prerequisiteId": "h2_vc_emotions_states"
  },
  {
   "topicId": "h2_capstone",
   "prerequisiteId": "h2_sk_reading_paragraphs"
  },
  {
   "topicId": "h2_capstone",
   "prerequisiteId": "h2_sk_scanning_notices"
  },
  {
   "topicId": "h2_capstone",
   "prerequisiteId": "h2_sk_dialogue_reading"
  },
  {
   "topicId": "h2_capstone",
   "prerequisiteId": "h2_gr_comparison_gen"
  },
  {
   "topicId": "h2_capstone",
   "prerequisiteId": "h2_gr_double_object"
  },
  {
   "topicId": "h2_capstone",
   "prerequisiteId": "h2_gr_result_complements"
  },
  {
   "topicId": "h2_capstone",
   "prerequisiteId": "h2_gr_fixed_patterns"
  },
  {
   "topicId": "h2_capstone",
   "prerequisiteId": "h2_gr_yijiu"
  },
  {
   "topicId": "h2_capstone",
   "prerequisiteId": "h2_qf_weishenme"
  },
  {
   "topicId": "h2_capstone",
   "prerequisiteId": "h2_qf_duojiu"
  },
  {
   "topicId": "h2_capstone",
   "prerequisiteId": "h2_qf_tag"
  },
  {
   "topicId": "h2_qf_weishenme",
   "prerequisiteId": "h2_gr_interrogative_pronouns"
  },
  {
   "topicId": "h2_qf_weishenme",
   "prerequisiteId": "h1_qf_shenme"
  },
  {
   "topicId": "h2_qf_weishenme",
   "prerequisiteId": "h0_qf_keep_talking"
  },
  {
   "topicId": "h2_qf_duojiu",
   "prerequisiteId": "h2_gr_interrogative_pronouns"
  },
  {
   "topicId": "h2_qf_duojiu",
   "prerequisiteId": "h2_vc_time_words"
  },
  {
   "topicId": "h2_qf_duojiu",
   "prerequisiteId": "h1_qf_jiduoshao"
  },
  {
   "topicId": "h2_qf_duojiu",
   "prerequisiteId": "h0_qf_keep_talking"
  },
  {
   "topicId": "h2_qf_tag",
   "prerequisiteId": "h2_gr_question_methods"
  },
  {
   "topicId": "h2_qf_tag",
   "prerequisiteId": "h1_qf_ma"
  },
  {
   "topicId": "h2_qf_tag",
   "prerequisiteId": "h1_qf_a_not_a"
  },
  {
   "topicId": "h2_qf_tag",
   "prerequisiteId": "h0_qf_keep_talking"
  },
  {
   "topicId": "h2_char_01",
   "prerequisiteId": "h1_char_23"
  },
  {
   "topicId": "h2_char_02",
   "prerequisiteId": "h2_char_01"
  },
  {
   "topicId": "h2_char_03",
   "prerequisiteId": "h2_char_02"
  },
  {
   "topicId": "h2_char_04",
   "prerequisiteId": "h2_char_03"
  },
  {
   "topicId": "h2_char_05",
   "prerequisiteId": "h2_char_04"
  },
  {
   "topicId": "h2_char_06",
   "prerequisiteId": "h2_char_05"
  },
  {
   "topicId": "h2_char_07",
   "prerequisiteId": "h2_char_06"
  },
  {
   "topicId": "h2_char_08",
   "prerequisiteId": "h2_char_07"
  },
  {
   "topicId": "h2_char_09",
   "prerequisiteId": "h2_char_08"
  },
  {
   "topicId": "h2_char_10",
   "prerequisiteId": "h2_char_09"
  },
  {
   "topicId": "h2_char_11",
   "prerequisiteId": "h2_char_10"
  },
  {
   "topicId": "h2_char_12",
   "prerequisiteId": "h2_char_11"
  },
  {
   "topicId": "h2_char_13",
   "prerequisiteId": "h2_char_12"
  },
  {
   "topicId": "h2_char_14",
   "prerequisiteId": "h2_char_13"
  },
  {
   "topicId": "h2_char_15",
   "prerequisiteId": "h2_char_14"
  },
  {
   "topicId": "h2_char_16",
   "prerequisiteId": "h2_char_15"
  },
  {
   "topicId": "h2_char_17",
   "prerequisiteId": "h2_char_16"
  },
  {
   "topicId": "h2_char_18",
   "prerequisiteId": "h2_char_17"
  },
  {
   "topicId": "h2_char_19",
   "prerequisiteId": "h2_char_18"
  },
  {
   "topicId": "h2_char_20",
   "prerequisiteId": "h2_char_19"
  },
  {
   "topicId": "h2_char_21",
   "prerequisiteId": "h2_char_20"
  },
  {
   "topicId": "h2_char_22",
   "prerequisiteId": "h2_char_21"
  },
  {
   "topicId": "h2_char_23",
   "prerequisiteId": "h2_char_22"
  },
  {
   "topicId": "h2_char_24",
   "prerequisiteId": "h2_char_23"
  },
  {
   "topicId": "h3_root_vocab",
   "prerequisiteId": "h2_capstone"
  },
  {
   "topicId": "h3_root_grammar",
   "prerequisiteId": "h2_capstone"
  },
  {
   "topicId": "h3_vc_family",
   "prerequisiteId": "h3_root_vocab"
  },
  {
   "topicId": "h3_vc_body",
   "prerequisiteId": "h3_root_vocab"
  },
  {
   "topicId": "h3_vc_health",
   "prerequisiteId": "h3_root_vocab"
  },
  {
   "topicId": "h3_vc_emotions",
   "prerequisiteId": "h3_root_vocab"
  },
  {
   "topicId": "h3_vc_food",
   "prerequisiteId": "h3_root_vocab"
  },
  {
   "topicId": "h3_vc_kitchen",
   "prerequisiteId": "h3_root_vocab"
  },
  {
   "topicId": "h3_vc_clothing",
   "prerequisiteId": "h3_root_vocab"
  },
  {
   "topicId": "h3_vc_places",
   "prerequisiteId": "h3_root_vocab"
  },
  {
   "topicId": "h3_vc_nature",
   "prerequisiteId": "h3_root_vocab"
  },
  {
   "topicId": "h3_vc_seasons_weather",
   "prerequisiteId": "h3_root_vocab"
  },
  {
   "topicId": "h3_vc_school_study",
   "prerequisiteId": "h3_root_vocab"
  },
  {
   "topicId": "h3_vc_work_society",
   "prerequisiteId": "h3_root_vocab"
  },
  {
   "topicId": "h3_vc_work_society",
   "prerequisiteId": "h1_vc_education"
  },
  {
   "topicId": "h3_vc_travel_transport",
   "prerequisiteId": "h3_root_vocab"
  },
  {
   "topicId": "h3_vc_directions",
   "prerequisiteId": "h3_root_vocab"
  },
  {
   "topicId": "h3_vc_entertainment",
   "prerequisiteId": "h3_root_vocab"
  },
  {
   "topicId": "h3_vc_daily_actions",
   "prerequisiteId": "h3_root_vocab"
  },
  {
   "topicId": "h3_vc_cognitive_verbs",
   "prerequisiteId": "h3_root_vocab"
  },
  {
   "topicId": "h3_vc_achievement_change",
   "prerequisiteId": "h3_root_vocab"
  },
  {
   "topicId": "h3_vc_social_relations",
   "prerequisiteId": "h3_root_vocab"
  },
  {
   "topicId": "h3_vc_qualities_adverbs",
   "prerequisiteId": "h3_root_vocab"
  },
  {
   "topicId": "h3_vc_conjunctions_adverbs",
   "prerequisiteId": "h3_root_vocab"
  },
  {
   "topicId": "h3_vc_conjunctions_adverbs",
   "prerequisiteId": "h1_vc_function_words"
  },
  {
   "topicId": "h3_vc_conjunctions_adverbs",
   "prerequisiteId": "h2_gr_conjunctions"
  },
  {
   "topicId": "h3_vc_misc_function",
   "prerequisiteId": "h3_root_vocab"
  },
  {
   "topicId": "h3_vc_misc_function",
   "prerequisiteId": "h2_gr_prepositions_object"
  },
  {
   "topicId": "h3_vc_abstract_nouns",
   "prerequisiteId": "h3_root_vocab"
  },
  {
   "topicId": "h3_vc_evaluative_adverbs",
   "prerequisiteId": "h3_root_vocab"
  },
  {
   "topicId": "h3_vc_misc2",
   "prerequisiteId": "h3_root_vocab"
  },
  {
   "topicId": "h3_gr_affixes",
   "prerequisiteId": "h3_root_grammar"
  },
  {
   "topicId": "h3_gr_affixes",
   "prerequisiteId": "h3_vc_family"
  },
  {
   "topicId": "h3_gr_affixes",
   "prerequisiteId": "h2_gr_ordinals_and_numbers"
  },
  {
   "topicId": "h3_gr_affixes",
   "prerequisiteId": "h1_vc_pronouns"
  },
  {
   "topicId": "h3_gr_modal_dare_need",
   "prerequisiteId": "h3_root_grammar"
  },
  {
   "topicId": "h3_gr_modal_dare_need",
   "prerequisiteId": "h3_vc_evaluative_adverbs"
  },
  {
   "topicId": "h3_gr_modal_dare_need",
   "prerequisiteId": "h1_gr_modal_hui_neng"
  },
  {
   "topicId": "h3_gr_modal_dare_need",
   "prerequisiteId": "h2_gr_modal_verbs"
  },
  {
   "topicId": "h3_gr_separable_verbs",
   "prerequisiteId": "h3_root_grammar"
  },
  {
   "topicId": "h3_gr_separable_verbs",
   "prerequisiteId": "h3_vc_daily_actions"
  },
  {
   "topicId": "h3_gr_separable_verbs",
   "prerequisiteId": "h3_vc_social_relations"
  },
  {
   "topicId": "h3_gr_separable_verbs",
   "prerequisiteId": "h2_gr_verb_reduplication"
  },
  {
   "topicId": "h3_gr_pronoun_nonq",
   "prerequisiteId": "h3_root_grammar"
  },
  {
   "topicId": "h3_gr_pronoun_nonq",
   "prerequisiteId": "h3_vc_misc_function"
  },
  {
   "topicId": "h3_gr_pronoun_nonq",
   "prerequisiteId": "h1_gr_scope_adverbs"
  },
  {
   "topicId": "h3_gr_pronoun_nonq",
   "prerequisiteId": "h1_gr_wh_questions"
  },
  {
   "topicId": "h3_gr_demonstratives",
   "prerequisiteId": "h3_root_grammar"
  },
  {
   "topicId": "h3_gr_demonstratives",
   "prerequisiteId": "h3_vc_misc_function"
  },
  {
   "topicId": "h3_gr_demonstratives",
   "prerequisiteId": "h1_vc_question_words"
  },
  {
   "topicId": "h3_gr_classifiers",
   "prerequisiteId": "h3_root_grammar"
  },
  {
   "topicId": "h3_gr_classifiers",
   "prerequisiteId": "h3_vc_clothing"
  },
  {
   "topicId": "h3_gr_classifiers",
   "prerequisiteId": "h3_vc_kitchen"
  },
  {
   "topicId": "h3_gr_classifiers",
   "prerequisiteId": "h1_gr_num_measure"
  },
  {
   "topicId": "h3_gr_classifiers",
   "prerequisiteId": "h2_gr_measure_words"
  },
  {
   "topicId": "h3_gr_degree_adverbs",
   "prerequisiteId": "h3_root_grammar"
  },
  {
   "topicId": "h3_gr_degree_adverbs",
   "prerequisiteId": "h3_vc_evaluative_adverbs"
  },
  {
   "topicId": "h3_gr_degree_adverbs",
   "prerequisiteId": "h3_vc_qualities_adverbs"
  },
  {
   "topicId": "h3_gr_degree_adverbs",
   "prerequisiteId": "h1_gr_degree_adverbs"
  },
  {
   "topicId": "h3_gr_degree_adverbs",
   "prerequisiteId": "h2_gr_degree_adverbs"
  },
  {
   "topicId": "h3_gr_scope_adverbs",
   "prerequisiteId": "h3_root_grammar"
  },
  {
   "topicId": "h3_gr_scope_adverbs",
   "prerequisiteId": "h3_vc_conjunctions_adverbs"
  },
  {
   "topicId": "h3_gr_scope_adverbs",
   "prerequisiteId": "h1_gr_scope_adverbs"
  },
  {
   "topicId": "h3_gr_time_adverbs",
   "prerequisiteId": "h3_root_grammar"
  },
  {
   "topicId": "h3_gr_time_adverbs",
   "prerequisiteId": "h3_vc_seasons_weather"
  },
  {
   "topicId": "h3_gr_time_adverbs",
   "prerequisiteId": "h3_vc_conjunctions_adverbs"
  },
  {
   "topicId": "h3_gr_time_adverbs",
   "prerequisiteId": "h2_gr_time_adverbs"
  },
  {
   "topicId": "h3_gr_time_adverbs",
   "prerequisiteId": "h1_gr_time_expressions"
  },
  {
   "topicId": "h3_gr_freq_adverbs",
   "prerequisiteId": "h3_root_grammar"
  },
  {
   "topicId": "h3_gr_freq_adverbs",
   "prerequisiteId": "h3_vc_conjunctions_adverbs"
  },
  {
   "topicId": "h3_gr_freq_adverbs",
   "prerequisiteId": "h2_gr_frequency_adverbs"
  },
  {
   "topicId": "h3_gr_manner_adverbs",
   "prerequisiteId": "h3_root_grammar"
  },
  {
   "topicId": "h3_gr_manner_adverbs",
   "prerequisiteId": "h3_vc_social_relations"
  },
  {
   "topicId": "h3_gr_manner_adverbs",
   "prerequisiteId": "h2_vc_speed_manner"
  },
  {
   "topicId": "h3_gr_modal_adverbs",
   "prerequisiteId": "h3_root_grammar"
  },
  {
   "topicId": "h3_gr_modal_adverbs",
   "prerequisiteId": "h3_vc_evaluative_adverbs"
  },
  {
   "topicId": "h3_gr_modal_adverbs",
   "prerequisiteId": "h2_gr_modal_verbs"
  },
  {
   "topicId": "h3_gr_prep_time_place",
   "prerequisiteId": "h3_root_grammar"
  },
  {
   "topicId": "h3_gr_prep_time_place",
   "prerequisiteId": "h3_vc_seasons_weather"
  },
  {
   "topicId": "h3_gr_prep_time_place",
   "prerequisiteId": "h3_vc_directions"
  },
  {
   "topicId": "h3_gr_prep_time_place",
   "prerequisiteId": "h1_gr_time_expressions"
  },
  {
   "topicId": "h3_gr_prep_time_place",
   "prerequisiteId": "h2_gr_prepositions_direction"
  },
  {
   "topicId": "h3_gr_prep_direction",
   "prerequisiteId": "h3_root_grammar"
  },
  {
   "topicId": "h3_gr_prep_direction",
   "prerequisiteId": "h3_vc_directions"
  },
  {
   "topicId": "h3_gr_prep_direction",
   "prerequisiteId": "h3_vc_travel_transport"
  },
  {
   "topicId": "h3_gr_prep_direction",
   "prerequisiteId": "h1_gr_direction_words"
  },
  {
   "topicId": "h3_gr_prep_direction",
   "prerequisiteId": "h2_gr_prepositions_direction"
  },
  {
   "topicId": "h3_gr_prep_cause_purpose",
   "prerequisiteId": "h3_root_grammar"
  },
  {
   "topicId": "h3_gr_prep_cause_purpose",
   "prerequisiteId": "h3_vc_misc_function"
  },
  {
   "topicId": "h3_gr_prep_cause_purpose",
   "prerequisiteId": "h3_vc_conjunctions_adverbs"
  },
  {
   "topicId": "h3_gr_prep_cause_purpose",
   "prerequisiteId": "h2_gr_complex_causal"
  },
  {
   "topicId": "h3_gr_ba_sentence",
   "prerequisiteId": "h3_root_grammar"
  },
  {
   "topicId": "h3_gr_ba_sentence",
   "prerequisiteId": "h3_vc_misc_function"
  },
  {
   "topicId": "h3_gr_ba_sentence",
   "prerequisiteId": "h3_vc_daily_actions"
  },
  {
   "topicId": "h3_gr_ba_sentence",
   "prerequisiteId": "h2_gr_result_complements"
  },
  {
   "topicId": "h3_gr_ba_sentence",
   "prerequisiteId": "h2_gr_serial_verb"
  },
  {
   "topicId": "h3_gr_passive",
   "prerequisiteId": "h3_root_grammar"
  },
  {
   "topicId": "h3_gr_passive",
   "prerequisiteId": "h3_vc_misc_function"
  },
  {
   "topicId": "h3_gr_passive",
   "prerequisiteId": "h3_gr_ba_sentence"
  },
  {
   "topicId": "h3_gr_passive",
   "prerequisiteId": "h2_gr_double_object"
  },
  {
   "topicId": "h3_gr_result_complements",
   "prerequisiteId": "h3_root_grammar"
  },
  {
   "topicId": "h3_gr_result_complements",
   "prerequisiteId": "h3_vc_achievement_change"
  },
  {
   "topicId": "h3_gr_result_complements",
   "prerequisiteId": "h2_gr_result_complements"
  },
  {
   "topicId": "h3_gr_directional_complements",
   "prerequisiteId": "h3_root_grammar"
  },
  {
   "topicId": "h3_gr_directional_complements",
   "prerequisiteId": "h3_vc_directions"
  },
  {
   "topicId": "h3_gr_directional_complements",
   "prerequisiteId": "h3_gr_result_complements"
  },
  {
   "topicId": "h3_gr_directional_complements",
   "prerequisiteId": "h2_gr_directional_complements"
  },
  {
   "topicId": "h3_gr_potential_complements",
   "prerequisiteId": "h3_root_grammar"
  },
  {
   "topicId": "h3_gr_potential_complements",
   "prerequisiteId": "h3_vc_qualities_adverbs"
  },
  {
   "topicId": "h3_gr_potential_complements",
   "prerequisiteId": "h3_gr_result_complements"
  },
  {
   "topicId": "h3_gr_potential_complements",
   "prerequisiteId": "h2_gr_result_complements"
  },
  {
   "topicId": "h3_gr_potential_complements",
   "prerequisiteId": "h2_gr_particle_de_complement"
  },
  {
   "topicId": "h3_gr_degree_complements",
   "prerequisiteId": "h3_root_grammar"
  },
  {
   "topicId": "h3_gr_degree_complements",
   "prerequisiteId": "h3_vc_evaluative_adverbs"
  },
  {
   "topicId": "h3_gr_degree_complements",
   "prerequisiteId": "h3_vc_emotions"
  },
  {
   "topicId": "h3_gr_degree_complements",
   "prerequisiteId": "h2_gr_particle_de_complement"
  },
  {
   "topicId": "h3_gr_degree_complements",
   "prerequisiteId": "h2_gr_degree_complements"
  },
  {
   "topicId": "h3_gr_duration_frequency",
   "prerequisiteId": "h3_root_grammar"
  },
  {
   "topicId": "h3_gr_duration_frequency",
   "prerequisiteId": "h3_vc_seasons_weather"
  },
  {
   "topicId": "h3_gr_duration_frequency",
   "prerequisiteId": "h3_vc_directions"
  },
  {
   "topicId": "h3_gr_duration_frequency",
   "prerequisiteId": "h2_gr_quantity_complements"
  },
  {
   "topicId": "h3_gr_pivot_sentence",
   "prerequisiteId": "h3_root_grammar"
  },
  {
   "topicId": "h3_gr_pivot_sentence",
   "prerequisiteId": "h3_vc_family"
  },
  {
   "topicId": "h3_gr_pivot_sentence",
   "prerequisiteId": "h3_vc_social_relations"
  },
  {
   "topicId": "h3_gr_pivot_sentence",
   "prerequisiteId": "h2_gr_serial_verb"
  },
  {
   "topicId": "h3_gr_comparison_extended",
   "prerequisiteId": "h3_root_grammar"
  },
  {
   "topicId": "h3_gr_comparison_extended",
   "prerequisiteId": "h3_vc_qualities_adverbs"
  },
  {
   "topicId": "h3_gr_comparison_extended",
   "prerequisiteId": "h3_vc_body"
  },
  {
   "topicId": "h3_gr_comparison_extended",
   "prerequisiteId": "h1_gr_comparison"
  },
  {
   "topicId": "h3_gr_comparison_extended",
   "prerequisiteId": "h2_gr_comparison_bi"
  },
  {
   "topicId": "h3_gr_topic_comment",
   "prerequisiteId": "h3_root_grammar"
  },
  {
   "topicId": "h3_gr_topic_comment",
   "prerequisiteId": "h3_vc_abstract_nouns"
  },
  {
   "topicId": "h3_gr_topic_comment",
   "prerequisiteId": "h1_gr_shi_sentence"
  },
  {
   "topicId": "h3_gr_complex_sentences",
   "prerequisiteId": "h3_root_grammar"
  },
  {
   "topicId": "h3_gr_complex_sentences",
   "prerequisiteId": "h3_vc_conjunctions_adverbs"
  },
  {
   "topicId": "h3_gr_complex_sentences",
   "prerequisiteId": "h3_gr_time_adverbs"
  },
  {
   "topicId": "h3_gr_complex_sentences",
   "prerequisiteId": "h2_gr_complex_concessive"
  },
  {
   "topicId": "h3_gr_conditional_purpose",
   "prerequisiteId": "h3_root_grammar"
  },
  {
   "topicId": "h3_gr_conditional_purpose",
   "prerequisiteId": "h3_vc_misc_function"
  },
  {
   "topicId": "h3_gr_conditional_purpose",
   "prerequisiteId": "h3_gr_prep_cause_purpose"
  },
  {
   "topicId": "h3_gr_conditional_purpose",
   "prerequisiteId": "h2_gr_complex_conditional"
  },
  {
   "topicId": "h3_gr_emphatic_patterns",
   "prerequisiteId": "h3_root_grammar"
  },
  {
   "topicId": "h3_gr_emphatic_patterns",
   "prerequisiteId": "h3_vc_evaluative_adverbs"
  },
  {
   "topicId": "h3_gr_emphatic_patterns",
   "prerequisiteId": "h1_gr_negation"
  },
  {
   "topicId": "h3_gr_emphatic_patterns",
   "prerequisiteId": "h2_gr_shi_de"
  },
  {
   "topicId": "h3_gr_repetition_patterns",
   "prerequisiteId": "h3_root_grammar"
  },
  {
   "topicId": "h3_gr_repetition_patterns",
   "prerequisiteId": "h3_gr_duration_frequency"
  },
  {
   "topicId": "h3_gr_repetition_patterns",
   "prerequisiteId": "h3_gr_classifiers"
  },
  {
   "topicId": "h3_gr_repetition_patterns",
   "prerequisiteId": "h2_gr_verb_reduplication"
  },
  {
   "topicId": "h3_gr_verbal_modifier",
   "prerequisiteId": "h3_root_grammar"
  },
  {
   "topicId": "h3_gr_verbal_modifier",
   "prerequisiteId": "h3_gr_topic_comment"
  },
  {
   "topicId": "h3_sk_reading_narrative",
   "prerequisiteId": "h3_vc_achievement_change"
  },
  {
   "topicId": "h3_sk_reading_narrative",
   "prerequisiteId": "h3_vc_social_relations"
  },
  {
   "topicId": "h3_sk_reading_narrative",
   "prerequisiteId": "h3_gr_time_adverbs"
  },
  {
   "topicId": "h3_sk_reading_narrative",
   "prerequisiteId": "h3_gr_complex_sentences"
  },
  {
   "topicId": "h3_sk_reading_narrative",
   "prerequisiteId": "h2_sk_reading_paragraphs"
  },
  {
   "topicId": "h3_sk_reading_description",
   "prerequisiteId": "h3_vc_nature"
  },
  {
   "topicId": "h3_sk_reading_description",
   "prerequisiteId": "h3_vc_work_society"
  },
  {
   "topicId": "h3_sk_reading_description",
   "prerequisiteId": "h3_gr_degree_adverbs"
  },
  {
   "topicId": "h3_sk_reading_description",
   "prerequisiteId": "h3_gr_comparison_extended"
  },
  {
   "topicId": "h3_sk_reading_description",
   "prerequisiteId": "h2_sk_reading_paragraphs"
  },
  {
   "topicId": "h3_sk_inference",
   "prerequisiteId": "h3_vc_cognitive_verbs"
  },
  {
   "topicId": "h3_sk_inference",
   "prerequisiteId": "h3_gr_modal_adverbs"
  },
  {
   "topicId": "h3_sk_inference",
   "prerequisiteId": "h3_gr_emphatic_patterns"
  },
  {
   "topicId": "h3_sk_inference",
   "prerequisiteId": "h2_sk_dialogue_reading"
  },
  {
   "topicId": "h3_sk_grammar_patterns",
   "prerequisiteId": "h3_gr_ba_sentence"
  },
  {
   "topicId": "h3_sk_grammar_patterns",
   "prerequisiteId": "h3_gr_passive"
  },
  {
   "topicId": "h3_sk_grammar_patterns",
   "prerequisiteId": "h3_gr_potential_complements"
  },
  {
   "topicId": "h3_sk_grammar_patterns",
   "prerequisiteId": "h3_gr_directional_complements"
  },
  {
   "topicId": "h3_sk_grammar_patterns",
   "prerequisiteId": "h3_gr_complex_sentences"
  },
  {
   "topicId": "h3_sk_grammar_patterns",
   "prerequisiteId": "h3_gr_conditional_purpose"
  },
  {
   "topicId": "h3_sk_grammar_patterns",
   "prerequisiteId": "h2_sk_reading_paragraphs"
  },
  {
   "topicId": "h3_capstone",
   "prerequisiteId": "h3_sk_reading_narrative"
  },
  {
   "topicId": "h3_capstone",
   "prerequisiteId": "h3_sk_reading_description"
  },
  {
   "topicId": "h3_capstone",
   "prerequisiteId": "h3_sk_inference"
  },
  {
   "topicId": "h3_capstone",
   "prerequisiteId": "h3_sk_grammar_patterns"
  },
  {
   "topicId": "h3_capstone",
   "prerequisiteId": "h3_gr_repetition_patterns"
  },
  {
   "topicId": "h3_capstone",
   "prerequisiteId": "h3_gr_verbal_modifier"
  },
  {
   "topicId": "h3_capstone",
   "prerequisiteId": "h3_gr_emphatic_patterns"
  },
  {
   "topicId": "h3_capstone",
   "prerequisiteId": "h3_qf_juede"
  },
  {
   "topicId": "h3_capstone",
   "prerequisiteId": "h3_qf_guo"
  },
  {
   "topicId": "h3_capstone",
   "prerequisiteId": "h3_qf_followup"
  },
  {
   "topicId": "h3_qf_juede",
   "prerequisiteId": "h3_root_grammar"
  },
  {
   "topicId": "h3_qf_juede",
   "prerequisiteId": "h3_root_vocab"
  },
  {
   "topicId": "h3_qf_juede",
   "prerequisiteId": "h1_qf_zenme"
  },
  {
   "topicId": "h3_qf_juede",
   "prerequisiteId": "h0_first_question"
  },
  {
   "topicId": "h3_qf_guo",
   "prerequisiteId": "h3_root_grammar"
  },
  {
   "topicId": "h3_qf_guo",
   "prerequisiteId": "h1_qf_ma"
  },
  {
   "topicId": "h3_qf_guo",
   "prerequisiteId": "h2_gr_particle_guo"
  },
  {
   "topicId": "h3_qf_followup",
   "prerequisiteId": "h3_root_vocab"
  },
  {
   "topicId": "h3_qf_followup",
   "prerequisiteId": "h3_root_grammar"
  },
  {
   "topicId": "h3_qf_followup",
   "prerequisiteId": "h1_qf_zenme"
  },
  {
   "topicId": "h3_char_01",
   "prerequisiteId": "h2_char_24"
  },
  {
   "topicId": "h3_char_02",
   "prerequisiteId": "h3_char_01"
  },
  {
   "topicId": "h3_char_03",
   "prerequisiteId": "h3_char_02"
  },
  {
   "topicId": "h3_char_04",
   "prerequisiteId": "h3_char_03"
  },
  {
   "topicId": "h3_char_05",
   "prerequisiteId": "h3_char_04"
  },
  {
   "topicId": "h3_char_06",
   "prerequisiteId": "h3_char_05"
  },
  {
   "topicId": "h3_char_07",
   "prerequisiteId": "h3_char_06"
  },
  {
   "topicId": "h3_char_08",
   "prerequisiteId": "h3_char_07"
  },
  {
   "topicId": "h3_char_09",
   "prerequisiteId": "h3_char_08"
  },
  {
   "topicId": "h3_char_10",
   "prerequisiteId": "h3_char_09"
  },
  {
   "topicId": "h3_char_11",
   "prerequisiteId": "h3_char_10"
  },
  {
   "topicId": "h3_char_12",
   "prerequisiteId": "h3_char_11"
  },
  {
   "topicId": "h3_char_13",
   "prerequisiteId": "h3_char_12"
  },
  {
   "topicId": "h3_char_14",
   "prerequisiteId": "h3_char_13"
  },
  {
   "topicId": "h3_char_15",
   "prerequisiteId": "h3_char_14"
  },
  {
   "topicId": "h3_char_16",
   "prerequisiteId": "h3_char_15"
  },
  {
   "topicId": "h3_char_17",
   "prerequisiteId": "h3_char_16"
  },
  {
   "topicId": "h3_char_18",
   "prerequisiteId": "h3_char_17"
  },
  {
   "topicId": "h3_char_19",
   "prerequisiteId": "h3_char_18"
  },
  {
   "topicId": "h3_char_20",
   "prerequisiteId": "h3_char_19"
  },
  {
   "topicId": "h3_char_21",
   "prerequisiteId": "h3_char_20"
  },
  {
   "topicId": "h3_char_22",
   "prerequisiteId": "h3_char_21"
  },
  {
   "topicId": "h3_char_23",
   "prerequisiteId": "h3_char_22"
  },
  {
   "topicId": "h3_char_24",
   "prerequisiteId": "h3_char_23"
  },
  {
   "topicId": "h3_char_25",
   "prerequisiteId": "h3_char_24"
  },
  {
   "topicId": "h3_char_26",
   "prerequisiteId": "h3_char_25"
  },
  {
   "topicId": "h3_char_27",
   "prerequisiteId": "h3_char_26"
  },
  {
   "topicId": "h3_char_28",
   "prerequisiteId": "h3_char_27"
  },
  {
   "topicId": "h3_char_29",
   "prerequisiteId": "h3_char_28"
  },
  {
   "topicId": "h3_char_30",
   "prerequisiteId": "h3_char_29"
  },
  {
   "topicId": "h3_char_31",
   "prerequisiteId": "h3_char_30"
  },
  {
   "topicId": "h3_char_32",
   "prerequisiteId": "h3_char_31"
  },
  {
   "topicId": "h3_char_33",
   "prerequisiteId": "h3_char_32"
  },
  {
   "topicId": "h3_char_34",
   "prerequisiteId": "h3_char_33"
  },
  {
   "topicId": "h3_char_35",
   "prerequisiteId": "h3_char_34"
  },
  {
   "topicId": "h3_char_36",
   "prerequisiteId": "h3_char_35"
  },
  {
   "topicId": "h3_char_37",
   "prerequisiteId": "h3_char_36"
  },
  {
   "topicId": "h3_char_38",
   "prerequisiteId": "h3_char_37"
  },
  {
   "topicId": "h3_char_39",
   "prerequisiteId": "h3_char_38"
  },
  {
   "topicId": "h5_vca_emotions",
   "prerequisiteId": "h5_root_vocab"
  },
  {
   "topicId": "h5_vca_emotions",
   "prerequisiteId": "h1_vc_adjectives"
  },
  {
   "topicId": "h5_vca_love_care",
   "prerequisiteId": "h5_root_vocab"
  },
  {
   "topicId": "h5_vca_tech_digital",
   "prerequisiteId": "h5_root_vocab"
  },
  {
   "topicId": "h5_vca_nature_animals",
   "prerequisiteId": "h5_root_vocab"
  },
  {
   "topicId": "h5_vca_ability_achieve",
   "prerequisiteId": "h5_root_vocab"
  },
  {
   "topicId": "h5_vca_ability_achieve",
   "prerequisiteId": "h3_vc_achievement_change"
  },
  {
   "topicId": "h5_vca_organize_manage",
   "prerequisiteId": "h5_root_vocab"
  },
  {
   "topicId": "h5_vca_school_edu",
   "prerequisiteId": "h5_root_vocab"
  },
  {
   "topicId": "h5_vca_time_temporal",
   "prerequisiteId": "h5_root_vocab"
  },
  {
   "topicId": "h5_vca_time_temporal",
   "prerequisiteId": "h3_vc_misc2"
  },
  {
   "topicId": "h5_vca_qualities_char",
   "prerequisiteId": "h5_root_vocab"
  },
  {
   "topicId": "h5_vca_containers_objects",
   "prerequisiteId": "h5_root_vocab"
  },
  {
   "topicId": "h5_vca_containers_objects",
   "prerequisiteId": "h1_vc_objects"
  },
  {
   "topicId": "h5_vca_inclusion_struct",
   "prerequisiteId": "h5_root_vocab"
  },
  {
   "topicId": "h5_vca_inclusion_struct",
   "prerequisiteId": "vc_abstract_concepts"
  },
  {
   "topicId": "h5_vca_inclusion_struct",
   "prerequisiteId": "h3_vc_abstract_nouns"
  },
  {
   "topicId": "h5_vca_food_cooking",
   "prerequisiteId": "h5_root_vocab"
  },
  {
   "topicId": "h5_vca_value_wealth",
   "prerequisiteId": "h5_root_vocab"
  },
  {
   "topicId": "h5_vca_report_doc",
   "prerequisiteId": "h5_root_vocab"
  },
  {
   "topicId": "h5_vca_essence_logic",
   "prerequisiteId": "h5_root_vocab"
  },
  {
   "topicId": "h5_vca_essence_logic",
   "prerequisiteId": "h3_vc_abstract_nouns"
  },
  {
   "topicId": "h5_vca_necessity_avoid",
   "prerequisiteId": "h5_root_vocab"
  },
  {
   "topicId": "h5_vca_argue_debate",
   "prerequisiteId": "h5_root_vocab"
  },
  {
   "topicId": "h5_vca_signs_expr",
   "prerequisiteId": "h5_root_vocab"
  },
  {
   "topicId": "h5_vca_results_progress",
   "prerequisiteId": "h5_root_vocab"
  },
  {
   "topicId": "h5_vca_results_progress",
   "prerequisiteId": "h3_vc_achievement_change"
  },
  {
   "topicId": "h5_vca_work_labor",
   "prerequisiteId": "h5_root_vocab"
  },
  {
   "topicId": "h5_vca_media_broadcast",
   "prerequisiteId": "h5_root_vocab"
  },
  {
   "topicId": "h5_vca_festivals_traditions",
   "prerequisiteId": "h5_root_vocab"
  },
  {
   "topicId": "h5_vca_geography_place",
   "prerequisiteId": "h5_root_vocab"
  },
  {
   "topicId": "h5_vca_body_parts",
   "prerequisiteId": "h5_root_vocab"
  },
  {
   "topicId": "h5_vca_health_medical",
   "prerequisiteId": "h5_root_vocab"
  },
  {
   "topicId": "h5_vca_health_medical",
   "prerequisiteId": "h3_vc_body"
  },
  {
   "topicId": "h5_vca_conflict_anger",
   "prerequisiteId": "h5_root_vocab"
  },
  {
   "topicId": "h5_vca_courage_hardship",
   "prerequisiteId": "h5_root_vocab"
  },
  {
   "topicId": "h5_vca_household_daily",
   "prerequisiteId": "h5_root_vocab"
  },
  {
   "topicId": "h5_vca_household_daily",
   "prerequisiteId": "h1_vc_objects"
  },
  {
   "topicId": "h5_vca_haste_urgency",
   "prerequisiteId": "h5_root_vocab"
  },
  {
   "topicId": "h5_vca_candor_attitude",
   "prerequisiteId": "h5_root_vocab"
  },
  {
   "topicId": "h5_vca_business_finance",
   "prerequisiteId": "h5_root_vocab"
  },
  {
   "topicId": "h5_vca_industry_infra",
   "prerequisiteId": "h5_root_vocab"
  },
  {
   "topicId": "h5_vca_ethics_law",
   "prerequisiteId": "h5_root_vocab"
  },
  {
   "topicId": "h5_vca_social_interact",
   "prerequisiteId": "h5_root_vocab"
  },
  {
   "topicId": "h5_vca_science_research",
   "prerequisiteId": "h5_root_vocab"
  },
  {
   "topicId": "h5_vca_family_relations",
   "prerequisiteId": "h5_root_vocab"
  },
  {
   "topicId": "h5_vca_gov_leadership",
   "prerequisiteId": "h5_root_vocab"
  },
  {
   "topicId": "h5_vca_motion_action",
   "prerequisiteId": "h5_root_vocab"
  },
  {
   "topicId": "h5_vca_thinking_cognition",
   "prerequisiteId": "h5_root_vocab"
  },
  {
   "topicId": "h5_vca_reform_change",
   "prerequisiteId": "h5_root_vocab"
  },
  {
   "topicId": "h5_vca_measurement",
   "prerequisiteId": "h5_root_vocab"
  },
  {
   "topicId": "h5_vca_arts_literature",
   "prerequisiteId": "h5_root_vocab"
  },
  {
   "topicId": "h5_vca_discourse",
   "prerequisiteId": "h5_root_vocab"
  },
  {
   "topicId": "h5_vca_discourse",
   "prerequisiteId": "h3_vc_evaluative_adverbs"
  },
  {
   "topicId": "h5_vca_phys_states",
   "prerequisiteId": "h5_root_vocab"
  },
  {
   "topicId": "h5_vca_responsibility",
   "prerequisiteId": "h5_root_vocab"
  },
  {
   "topicId": "h5_vca_travel_events",
   "prerequisiteId": "h5_root_vocab"
  },
  {
   "topicId": "h5_vca_social_energy",
   "prerequisiteId": "h5_root_vocab"
  },
  {
   "topicId": "h5_vca_evaluation",
   "prerequisiteId": "h5_root_vocab"
  },
  {
   "topicId": "h5_vca_evaluation",
   "prerequisiteId": "h3_vc_evaluative_adverbs"
  },
  {
   "topicId": "h5_vca_building_plan",
   "prerequisiteId": "h5_root_vocab"
  },
  {
   "topicId": "h5_vca_scenery_honor",
   "prerequisiteId": "h5_root_vocab"
  },
  {
   "topicId": "h5_vca_actions_misc",
   "prerequisiteId": "h5_root_vocab"
  },
  {
   "topicId": "h5_vca_competition_fitness",
   "prerequisiteId": "h5_root_vocab"
  },
  {
   "topicId": "h5_vca_misc_objects_a",
   "prerequisiteId": "h5_root_vocab"
  },
  {
   "topicId": "h5_vca_misc_objects_b",
   "prerequisiteId": "h5_root_vocab"
  },
  {
   "topicId": "h5_vca_misc_final",
   "prerequisiteId": "h5_root_vocab"
  },
  {
   "topicId": "h5_root_vocab",
   "prerequisiteId": "sk_exam_strategy"
  },
  {
   "topicId": "h5_root_grammar",
   "prerequisiteId": "sk_exam_strategy"
  },
  {
   "topicId": "h5_vcb_001",
   "prerequisiteId": "h5_root_vocab"
  },
  {
   "topicId": "h5_vcb_002",
   "prerequisiteId": "h5_root_vocab"
  },
  {
   "topicId": "h5_vcb_003",
   "prerequisiteId": "h5_root_vocab"
  },
  {
   "topicId": "h5_vcb_004",
   "prerequisiteId": "h5_root_vocab"
  },
  {
   "topicId": "h5_vcb_005",
   "prerequisiteId": "h5_root_vocab"
  },
  {
   "topicId": "h5_vcb_006",
   "prerequisiteId": "h5_root_vocab"
  },
  {
   "topicId": "h5_vcb_007",
   "prerequisiteId": "h5_root_vocab"
  },
  {
   "topicId": "h5_vcb_008",
   "prerequisiteId": "h5_root_vocab"
  },
  {
   "topicId": "h5_vcb_009",
   "prerequisiteId": "h5_root_vocab"
  },
  {
   "topicId": "h5_vcb_010",
   "prerequisiteId": "h5_root_vocab"
  },
  {
   "topicId": "h5_vcb_011",
   "prerequisiteId": "h5_root_vocab"
  },
  {
   "topicId": "h5_vcb_012",
   "prerequisiteId": "h5_root_vocab"
  },
  {
   "topicId": "h5_vcb_013",
   "prerequisiteId": "h5_root_vocab"
  },
  {
   "topicId": "h5_vcb_014",
   "prerequisiteId": "h5_root_vocab"
  },
  {
   "topicId": "h5_vcb_014",
   "prerequisiteId": "h3_vc_body"
  },
  {
   "topicId": "h5_vcb_015",
   "prerequisiteId": "h5_root_vocab"
  },
  {
   "topicId": "h5_vcb_016",
   "prerequisiteId": "h5_root_vocab"
  },
  {
   "topicId": "h5_vcb_017",
   "prerequisiteId": "h5_root_vocab"
  },
  {
   "topicId": "h5_vcb_018",
   "prerequisiteId": "h5_root_vocab"
  },
  {
   "topicId": "h5_vcb_019",
   "prerequisiteId": "h5_root_vocab"
  },
  {
   "topicId": "h5_vcb_020",
   "prerequisiteId": "h5_root_vocab"
  },
  {
   "topicId": "h5_vcb_021",
   "prerequisiteId": "h5_root_vocab"
  },
  {
   "topicId": "h5_vcb_022",
   "prerequisiteId": "h5_root_vocab"
  },
  {
   "topicId": "h5_vcb_023",
   "prerequisiteId": "h5_root_vocab"
  },
  {
   "topicId": "h5_vcb_024",
   "prerequisiteId": "h5_root_vocab"
  },
  {
   "topicId": "h5_vcb_025",
   "prerequisiteId": "h5_root_vocab"
  },
  {
   "topicId": "h5_vcb_026",
   "prerequisiteId": "h5_root_vocab"
  },
  {
   "topicId": "h5_vcb_027",
   "prerequisiteId": "h5_root_vocab"
  },
  {
   "topicId": "h5_vcb_028",
   "prerequisiteId": "h5_root_vocab"
  },
  {
   "topicId": "h5_vcb_029",
   "prerequisiteId": "h5_root_vocab"
  },
  {
   "topicId": "h5_vcb_030",
   "prerequisiteId": "h5_root_vocab"
  },
  {
   "topicId": "h5_vcb_031",
   "prerequisiteId": "h5_root_vocab"
  },
  {
   "topicId": "h5_vcb_032",
   "prerequisiteId": "h5_root_vocab"
  },
  {
   "topicId": "h5_vcb_033",
   "prerequisiteId": "h5_root_vocab"
  },
  {
   "topicId": "h5_vcb_034",
   "prerequisiteId": "h5_root_vocab"
  },
  {
   "topicId": "h5_vcb_035",
   "prerequisiteId": "h5_root_vocab"
  },
  {
   "topicId": "h5_vcb_036",
   "prerequisiteId": "h5_root_vocab"
  },
  {
   "topicId": "h5_vcb_037",
   "prerequisiteId": "h5_root_vocab"
  },
  {
   "topicId": "h5_vcb_038",
   "prerequisiteId": "h5_root_vocab"
  },
  {
   "topicId": "h5_vcb_039",
   "prerequisiteId": "h5_root_vocab"
  },
  {
   "topicId": "h5_vcb_040",
   "prerequisiteId": "h5_root_vocab"
  },
  {
   "topicId": "h5_vcb_041",
   "prerequisiteId": "h5_root_vocab"
  },
  {
   "topicId": "h5_vcb_042",
   "prerequisiteId": "h5_root_vocab"
  },
  {
   "topicId": "h5_vcb_043",
   "prerequisiteId": "h5_root_vocab"
  },
  {
   "topicId": "h5_vcb_044",
   "prerequisiteId": "h5_root_vocab"
  },
  {
   "topicId": "h5_vcb_045",
   "prerequisiteId": "h5_root_vocab"
  },
  {
   "topicId": "h5_vcb_046",
   "prerequisiteId": "h5_root_vocab"
  },
  {
   "topicId": "h5_vcb_047",
   "prerequisiteId": "h5_root_vocab"
  },
  {
   "topicId": "h5_vcb_048",
   "prerequisiteId": "h5_root_vocab"
  },
  {
   "topicId": "h5_vcb_049",
   "prerequisiteId": "h5_root_vocab"
  },
  {
   "topicId": "h5_vcb_050",
   "prerequisiteId": "h5_root_vocab"
  },
  {
   "topicId": "h5_vcb_051",
   "prerequisiteId": "h5_root_vocab"
  },
  {
   "topicId": "h5_vcb_052",
   "prerequisiteId": "h5_root_vocab"
  },
  {
   "topicId": "h5_vcb_053",
   "prerequisiteId": "h5_root_vocab"
  },
  {
   "topicId": "h5_vcb_054",
   "prerequisiteId": "h5_root_vocab"
  },
  {
   "topicId": "h5_vcb_055",
   "prerequisiteId": "h5_root_vocab"
  },
  {
   "topicId": "h5_vcb_056",
   "prerequisiteId": "h5_root_vocab"
  },
  {
   "topicId": "h5_vcb_057",
   "prerequisiteId": "h5_root_vocab"
  },
  {
   "topicId": "h5_vcb_058",
   "prerequisiteId": "h5_root_vocab"
  },
  {
   "topicId": "h5_vcb_059",
   "prerequisiteId": "h5_root_vocab"
  },
  {
   "topicId": "h5_vcb_060",
   "prerequisiteId": "h5_root_vocab"
  },
  {
   "topicId": "h5_vcb_061",
   "prerequisiteId": "h5_root_vocab"
  },
  {
   "topicId": "h5_vcb_062",
   "prerequisiteId": "h5_root_vocab"
  },
  {
   "topicId": "h5_vcb_063",
   "prerequisiteId": "h5_root_vocab"
  },
  {
   "topicId": "h5_vcb_064",
   "prerequisiteId": "h5_root_vocab"
  },
  {
   "topicId": "h5_vcb_065",
   "prerequisiteId": "h5_root_vocab"
  },
  {
   "topicId": "h5_vcb_066",
   "prerequisiteId": "h5_root_vocab"
  },
  {
   "topicId": "h5_vcb_067",
   "prerequisiteId": "h5_root_vocab"
  },
  {
   "topicId": "h5_vcb_068",
   "prerequisiteId": "h5_root_vocab"
  },
  {
   "topicId": "h5_vcb_069",
   "prerequisiteId": "h5_root_vocab"
  },
  {
   "topicId": "h5_vcb_070",
   "prerequisiteId": "h5_root_vocab"
  },
  {
   "topicId": "h5_vcb_071",
   "prerequisiteId": "h5_root_vocab"
  },
  {
   "topicId": "h5_vcb_072",
   "prerequisiteId": "h5_root_vocab"
  },
  {
   "topicId": "h5_vcb_073",
   "prerequisiteId": "h5_root_vocab"
  },
  {
   "topicId": "h5_vcb_074",
   "prerequisiteId": "h5_root_vocab"
  },
  {
   "topicId": "h5_vcb_075",
   "prerequisiteId": "h5_root_vocab"
  },
  {
   "topicId": "h5_vcb_076",
   "prerequisiteId": "h5_root_vocab"
  },
  {
   "topicId": "h5_vcb_077",
   "prerequisiteId": "h5_root_vocab"
  },
  {
   "topicId": "h5_vcb_078",
   "prerequisiteId": "h5_root_vocab"
  },
  {
   "topicId": "h5_vcb_079",
   "prerequisiteId": "h5_root_vocab"
  },
  {
   "topicId": "h5_vcb_080",
   "prerequisiteId": "h5_root_vocab"
  },
  {
   "topicId": "h5_vcb_081",
   "prerequisiteId": "h5_root_vocab"
  },
  {
   "topicId": "h5_vcb_082",
   "prerequisiteId": "h5_root_vocab"
  },
  {
   "topicId": "h5_vcb_083",
   "prerequisiteId": "h5_root_vocab"
  },
  {
   "topicId": "h5_vcb_084",
   "prerequisiteId": "h5_root_vocab"
  },
  {
   "topicId": "h5_vcb_085",
   "prerequisiteId": "h5_root_vocab"
  },
  {
   "topicId": "h5_vcb_086",
   "prerequisiteId": "h5_root_vocab"
  },
  {
   "topicId": "h5_vcb_087",
   "prerequisiteId": "h5_root_vocab"
  },
  {
   "topicId": "h5_vcb_088",
   "prerequisiteId": "h5_root_vocab"
  },
  {
   "topicId": "h5_vcb_089",
   "prerequisiteId": "h5_root_vocab"
  },
  {
   "topicId": "h5_vcb_090",
   "prerequisiteId": "h5_root_vocab"
  },
  {
   "topicId": "h5_vcb_091",
   "prerequisiteId": "h5_root_vocab"
  },
  {
   "topicId": "h5_vcb_092",
   "prerequisiteId": "h5_root_vocab"
  },
  {
   "topicId": "h5_vcb_093",
   "prerequisiteId": "h5_root_vocab"
  },
  {
   "topicId": "h5_vcb_094",
   "prerequisiteId": "h5_root_vocab"
  },
  {
   "topicId": "h5_vcb_095",
   "prerequisiteId": "h5_root_vocab"
  },
  {
   "topicId": "h5_vcb_096",
   "prerequisiteId": "h5_root_vocab"
  },
  {
   "topicId": "h5_vcb_096",
   "prerequisiteId": "h3_vc_abstract_nouns"
  },
  {
   "topicId": "h5_vcb_097",
   "prerequisiteId": "h5_root_vocab"
  },
  {
   "topicId": "h5_vcb_098",
   "prerequisiteId": "h5_root_vocab"
  },
  {
   "topicId": "h5_vcb_099",
   "prerequisiteId": "h5_root_vocab"
  },
  {
   "topicId": "h5_vcb_100",
   "prerequisiteId": "h5_root_vocab"
  },
  {
   "topicId": "h5_vcb_101",
   "prerequisiteId": "h5_root_vocab"
  },
  {
   "topicId": "h5_vcb_102",
   "prerequisiteId": "h5_root_vocab"
  },
  {
   "topicId": "h5_vcb_103",
   "prerequisiteId": "h5_root_vocab"
  },
  {
   "topicId": "h5_vcb_104",
   "prerequisiteId": "h5_root_vocab"
  },
  {
   "topicId": "h5_vcb_105",
   "prerequisiteId": "h5_root_vocab"
  },
  {
   "topicId": "h5_vcb_106",
   "prerequisiteId": "h5_root_vocab"
  },
  {
   "topicId": "h5_vcb_107",
   "prerequisiteId": "h5_root_vocab"
  },
  {
   "topicId": "h5_gr_001",
   "prerequisiteId": "h5_root_grammar"
  },
  {
   "topicId": "h5_gr_001",
   "prerequisiteId": "gr_measure_borrowed"
  },
  {
   "topicId": "h5_gr_002",
   "prerequisiteId": "h5_root_grammar"
  },
  {
   "topicId": "h5_gr_002",
   "prerequisiteId": "gr_adv_degree"
  },
  {
   "topicId": "h5_gr_003",
   "prerequisiteId": "h5_root_grammar"
  },
  {
   "topicId": "h5_gr_003",
   "prerequisiteId": "gr_adv_scope"
  },
  {
   "topicId": "h5_gr_004",
   "prerequisiteId": "h5_root_grammar"
  },
  {
   "topicId": "h5_gr_004",
   "prerequisiteId": "h5_vcb_005"
  },
  {
   "topicId": "h5_gr_004",
   "prerequisiteId": "gr_adv_time_nuance"
  },
  {
   "topicId": "h5_gr_005",
   "prerequisiteId": "h5_root_grammar"
  },
  {
   "topicId": "h5_gr_005",
   "prerequisiteId": "gr_adv_attitude"
  },
  {
   "topicId": "h5_gr_006",
   "prerequisiteId": "h5_root_grammar"
  },
  {
   "topicId": "h5_gr_007",
   "prerequisiteId": "h5_root_grammar"
  },
  {
   "topicId": "h5_gr_007",
   "prerequisiteId": "gr_prep_suizhe"
  },
  {
   "topicId": "h5_gr_008",
   "prerequisiteId": "h5_root_grammar"
  },
  {
   "topicId": "h5_gr_008",
   "prerequisiteId": "gr_ba_construction"
  },
  {
   "topicId": "h5_gr_009",
   "prerequisiteId": "h5_root_grammar"
  },
  {
   "topicId": "h5_gr_009",
   "prerequisiteId": "h5_vcb_103"
  },
  {
   "topicId": "h5_gr_009",
   "prerequisiteId": "gr_prep_anzhao"
  },
  {
   "topicId": "h5_gr_010",
   "prerequisiteId": "h5_root_grammar"
  },
  {
   "topicId": "h5_gr_010",
   "prerequisiteId": "h5_vcb_013"
  },
  {
   "topicId": "h5_gr_011",
   "prerequisiteId": "h5_root_grammar"
  },
  {
   "topicId": "h5_gr_011",
   "prerequisiteId": "gr_zhe"
  },
  {
   "topicId": "h5_gr_011",
   "prerequisiteId": "gr_separable_verbs"
  },
  {
   "topicId": "h5_gr_012",
   "prerequisiteId": "h5_root_grammar"
  },
  {
   "topicId": "h5_gr_013",
   "prerequisiteId": "h5_root_grammar"
  },
  {
   "topicId": "h5_gr_013",
   "prerequisiteId": "gr_topic_comment"
  },
  {
   "topicId": "h5_gr_014",
   "prerequisiteId": "h5_root_grammar"
  },
  {
   "topicId": "h5_gr_014",
   "prerequisiteId": "gr_existential"
  },
  {
   "topicId": "h5_gr_015",
   "prerequisiteId": "h5_root_grammar"
  },
  {
   "topicId": "h5_gr_015",
   "prerequisiteId": "gr_adv_degree"
  },
  {
   "topicId": "h5_gr_016",
   "prerequisiteId": "h5_root_grammar"
  },
  {
   "topicId": "h5_gr_016",
   "prerequisiteId": "gr_dir_comp_complex"
  },
  {
   "topicId": "h5_gr_017",
   "prerequisiteId": "h5_root_grammar"
  },
  {
   "topicId": "h5_gr_017",
   "prerequisiteId": "gr_poss_comp"
  },
  {
   "topicId": "h5_gr_018",
   "prerequisiteId": "h5_root_grammar"
  },
  {
   "topicId": "h5_gr_018",
   "prerequisiteId": "h5_vcb_032"
  },
  {
   "topicId": "h5_gr_018",
   "prerequisiteId": "gr_degree_comp"
  },
  {
   "topicId": "h5_gr_019",
   "prerequisiteId": "h5_root_grammar"
  },
  {
   "topicId": "h5_gr_019",
   "prerequisiteId": "gr_existential"
  },
  {
   "topicId": "h5_gr_020",
   "prerequisiteId": "h5_root_grammar"
  },
  {
   "topicId": "h5_gr_020",
   "prerequisiteId": "gr_ba_construction"
  },
  {
   "topicId": "h5_gr_021",
   "prerequisiteId": "h5_root_grammar"
  },
  {
   "topicId": "h5_gr_021",
   "prerequisiteId": "gr_pivot_causative"
  },
  {
   "topicId": "h5_gr_022",
   "prerequisiteId": "h5_root_grammar"
  },
  {
   "topicId": "h5_gr_022",
   "prerequisiteId": "gr_gen_yiyang"
  },
  {
   "topicId": "h5_gr_023",
   "prerequisiteId": "h5_root_grammar"
  },
  {
   "topicId": "h5_gr_023",
   "prerequisiteId": "h5_vcb_013"
  },
  {
   "topicId": "h5_gr_023",
   "prerequisiteId": "gr_jinguan"
  },
  {
   "topicId": "h5_gr_024",
   "prerequisiteId": "h5_root_grammar"
  },
  {
   "topicId": "h5_gr_024",
   "prerequisiteId": "h5_gr_023"
  },
  {
   "topicId": "h5_gr_024",
   "prerequisiteId": "gr_prep_youyu"
  },
  {
   "topicId": "h5_gr_025",
   "prerequisiteId": "h5_root_grammar"
  },
  {
   "topicId": "h5_gr_025",
   "prerequisiteId": "h5_vcb_035"
  },
  {
   "topicId": "h5_gr_025",
   "prerequisiteId": "gr_lian_dou"
  },
  {
   "topicId": "h5_gr_026",
   "prerequisiteId": "h5_root_grammar"
  },
  {
   "topicId": "h5_gr_026",
   "prerequisiteId": "h5_vcb_010"
  },
  {
   "topicId": "h5_gr_026",
   "prerequisiteId": "gr_formal_register"
  },
  {
   "topicId": "h5_gr_027",
   "prerequisiteId": "h5_root_grammar"
  },
  {
   "topicId": "h5_gr_027",
   "prerequisiteId": "h5_gr_023"
  },
  {
   "topicId": "h5_gr_027",
   "prerequisiteId": "h5_gr_024"
  },
  {
   "topicId": "h5_gr_027",
   "prerequisiteId": "gr_budan_erqie"
  },
  {
   "topicId": "h5_sk_001",
   "prerequisiteId": "h5_root_grammar"
  },
  {
   "topicId": "h5_sk_001",
   "prerequisiteId": "h5_gr_015"
  },
  {
   "topicId": "h5_sk_001",
   "prerequisiteId": "h5_gr_026"
  },
  {
   "topicId": "h5_sk_001",
   "prerequisiteId": "h5_gr_027"
  },
  {
   "topicId": "h5_sk_001",
   "prerequisiteId": "sk_reading_main"
  },
  {
   "topicId": "h5_sk_002",
   "prerequisiteId": "h5_root_grammar"
  },
  {
   "topicId": "h5_sk_002",
   "prerequisiteId": "h5_gr_006"
  },
  {
   "topicId": "h5_sk_002",
   "prerequisiteId": "h5_gr_025"
  },
  {
   "topicId": "h5_sk_002",
   "prerequisiteId": "h5_sk_001"
  },
  {
   "topicId": "h5_sk_002",
   "prerequisiteId": "sk_reading_detail"
  },
  {
   "topicId": "h5_sk_003",
   "prerequisiteId": "h5_gr_016"
  },
  {
   "topicId": "h5_sk_003",
   "prerequisiteId": "h5_gr_017"
  },
  {
   "topicId": "h5_sk_003",
   "prerequisiteId": "h5_gr_018"
  },
  {
   "topicId": "h5_sk_003",
   "prerequisiteId": "h5_gr_020"
  },
  {
   "topicId": "h5_sk_003",
   "prerequisiteId": "h5_gr_023"
  },
  {
   "topicId": "h5_sk_003",
   "prerequisiteId": "sk_ordering_task"
  },
  {
   "topicId": "h5_sk_004",
   "prerequisiteId": "h5_root_vocab"
  },
  {
   "topicId": "h5_sk_004",
   "prerequisiteId": "h5_vcb_048"
  },
  {
   "topicId": "h5_sk_004",
   "prerequisiteId": "h5_vcb_058"
  },
  {
   "topicId": "h5_sk_004",
   "prerequisiteId": "h5_vcb_098"
  },
  {
   "topicId": "h5_sk_004",
   "prerequisiteId": "sk_near_synonyms"
  },
  {
   "topicId": "h5_sk_005",
   "prerequisiteId": "h5_sk_001"
  },
  {
   "topicId": "h5_sk_005",
   "prerequisiteId": "h5_sk_002"
  },
  {
   "topicId": "h5_sk_005",
   "prerequisiteId": "h5_sk_003"
  },
  {
   "topicId": "h5_sk_005",
   "prerequisiteId": "h5_sk_004"
  },
  {
   "topicId": "h5_sk_005",
   "prerequisiteId": "h5_gr_013"
  },
  {
   "topicId": "h5_sk_005",
   "prerequisiteId": "sk_error_sentences"
  },
  {
   "topicId": "h5_capstone",
   "prerequisiteId": "h5_sk_001"
  },
  {
   "topicId": "h5_capstone",
   "prerequisiteId": "h5_sk_002"
  },
  {
   "topicId": "h5_capstone",
   "prerequisiteId": "h5_sk_003"
  },
  {
   "topicId": "h5_capstone",
   "prerequisiteId": "h5_sk_004"
  },
  {
   "topicId": "h5_capstone",
   "prerequisiteId": "h5_sk_005"
  },
  {
   "topicId": "h5_capstone",
   "prerequisiteId": "h5_gr_025"
  },
  {
   "topicId": "h5_capstone",
   "prerequisiteId": "h5_gr_027"
  },
  {
   "topicId": "h6_vca_exclamations_misc",
   "prerequisiteId": "h6_root_vocab"
  },
  {
   "topicId": "h6_vca_price_surface",
   "prerequisiteId": "h6_root_vocab"
  },
  {
   "topicId": "h6_vca_data_version",
   "prerequisiteId": "h6_root_vocab"
  },
  {
   "topicId": "h6_vca_exemplar_packaging",
   "prerequisiteId": "h6_root_vocab"
  },
  {
   "topicId": "h6_vca_security_guarantee",
   "prerequisiteId": "h6_root_vocab"
  },
  {
   "topicId": "h6_vca_grief_borders",
   "prerequisiteId": "h6_root_vocab"
  },
  {
   "topicId": "h6_vca_self_identity",
   "prerequisiteId": "h6_root_vocab"
  },
  {
   "topicId": "h6_vca_borders_weaving",
   "prerequisiteId": "h6_root_vocab"
  },
  {
   "topicId": "h6_vca_change_convenience",
   "prerequisiteId": "h6_root_vocab"
  },
  {
   "topicId": "h6_vca_vote_honor",
   "prerequisiteId": "h6_root_vocab"
  },
  {
   "topicId": "h6_vca_exploit_broadcast",
   "prerequisiteId": "h6_root_vocab"
  },
  {
   "topicId": "h6_vca_negation_idioms",
   "prerequisiteId": "h6_root_vocab"
  },
  {
   "topicId": "h6_vca_notice_layout",
   "prerequisiteId": "h6_root_vocab"
  },
  {
   "topicId": "h6_vca_accept_lottery",
   "prerequisiteId": "h6_root_vocab"
  },
  {
   "topicId": "h6_vca_operation_strategy",
   "prerequisiteId": "h6_root_vocab"
  },
  {
   "topicId": "h6_vca_assist_tremble",
   "prerequisiteId": "h6_root_vocab"
  },
  {
   "topicId": "h6_vca_advocate_tide",
   "prerequisiteId": "h6_root_vocab"
  },
  {
   "topicId": "h6_vca_ponder_display",
   "prerequisiteId": "h6_root_vocab"
  },
  {
   "topicId": "h6_vca_appear_undertake",
   "prerequisiteId": "h6_root_vocab"
  },
  {
   "topicId": "h6_vca_hesitate_equator",
   "prerequisiteId": "h6_root_vocab"
  },
  {
   "topicId": "h6_root_vocab",
   "prerequisiteId": "h5_capstone"
  },
  {
   "topicId": "h6_root_grammar",
   "prerequisiteId": "h5_capstone"
  },
  {
   "topicId": "h6_gr_affixes",
   "prerequisiteId": "h6_root_grammar"
  },
  {
   "topicId": "h6_gr_affixes",
   "prerequisiteId": "h3_gr_affixes"
  },
  {
   "topicId": "h6_gr_dem_pronouns",
   "prerequisiteId": "h6_root_grammar"
  },
  {
   "topicId": "h6_gr_measure_words",
   "prerequisiteId": "h6_root_grammar"
  },
  {
   "topicId": "h6_gr_measure_words",
   "prerequisiteId": "gr_measure_borrowed"
  },
  {
   "topicId": "h6_gr_adv_degree_scope",
   "prerequisiteId": "h6_root_grammar"
  },
  {
   "topicId": "h6_gr_adv_degree_scope",
   "prerequisiteId": "gr_adv_degree"
  },
  {
   "topicId": "h6_gr_adv_degree_scope",
   "prerequisiteId": "h5_gr_002"
  },
  {
   "topicId": "h6_gr_adv_connective_mood",
   "prerequisiteId": "h6_root_grammar"
  },
  {
   "topicId": "h6_gr_adv_connective_mood",
   "prerequisiteId": "h6_gr_adv_degree_scope"
  },
  {
   "topicId": "h6_gr_prep_time_place",
   "prerequisiteId": "h6_root_grammar"
  },
  {
   "topicId": "h6_gr_prep_time_place",
   "prerequisiteId": "h5_gr_007"
  },
  {
   "topicId": "h6_gr_prep_causal",
   "prerequisiteId": "h6_root_grammar"
  },
  {
   "topicId": "h6_gr_prep_causal",
   "prerequisiteId": "h6_gr_prep_time_place"
  },
  {
   "topicId": "h6_gr_prep_causal",
   "prerequisiteId": "gr_prep_anzhao"
  },
  {
   "topicId": "h6_gr_prep_causal",
   "prerequisiteId": "h5_gr_008"
  },
  {
   "topicId": "h6_gr_conjunctions",
   "prerequisiteId": "h6_root_grammar"
  },
  {
   "topicId": "h6_gr_conjunctions",
   "prerequisiteId": "h5_gr_010"
  },
  {
   "topicId": "h6_gr_particles",
   "prerequisiteId": "h6_root_grammar"
  },
  {
   "topicId": "h6_gr_particles",
   "prerequisiteId": "h5_gr_012"
  },
  {
   "topicId": "h6_gr_num_adj_clf",
   "prerequisiteId": "h6_root_grammar"
  },
  {
   "topicId": "h6_gr_num_adj_clf",
   "prerequisiteId": "h6_gr_measure_words"
  },
  {
   "topicId": "h6_gr_four_char_patterns",
   "prerequisiteId": "h6_root_grammar"
  },
  {
   "topicId": "h6_gr_fixed_expressions",
   "prerequisiteId": "h6_root_grammar"
  },
  {
   "topicId": "h6_gr_fixed_formats",
   "prerequisiteId": "h6_root_grammar"
  },
  {
   "topicId": "h6_gr_fixed_formats",
   "prerequisiteId": "h6_gr_four_char_patterns"
  },
  {
   "topicId": "h6_gr_object_types",
   "prerequisiteId": "h6_root_grammar"
  },
  {
   "topicId": "h6_gr_object_types",
   "prerequisiteId": "gr_existential"
  },
  {
   "topicId": "h6_gr_dir_complements",
   "prerequisiteId": "h6_root_grammar"
  },
  {
   "topicId": "h6_gr_dir_complements",
   "prerequisiteId": "gr_dir_comp_complex"
  },
  {
   "topicId": "h6_gr_dir_complements",
   "prerequisiteId": "h5_gr_016"
  },
  {
   "topicId": "h6_gr_ba_bei_advanced",
   "prerequisiteId": "h6_root_grammar"
  },
  {
   "topicId": "h6_gr_ba_bei_advanced",
   "prerequisiteId": "h6_gr_object_types"
  },
  {
   "topicId": "h6_gr_ba_bei_advanced",
   "prerequisiteId": "gr_ba_construction"
  },
  {
   "topicId": "h6_gr_ba_bei_advanced",
   "prerequisiteId": "gr_bei_construction"
  },
  {
   "topicId": "h6_gr_ba_bei_advanced",
   "prerequisiteId": "h5_gr_020"
  },
  {
   "topicId": "h6_gr_compound_coord",
   "prerequisiteId": "h6_root_grammar"
  },
  {
   "topicId": "h6_gr_compound_coord",
   "prerequisiteId": "h6_gr_conjunctions"
  },
  {
   "topicId": "h6_gr_compound_coord",
   "prerequisiteId": "gr_you_you"
  },
  {
   "topicId": "h6_gr_compound_coord",
   "prerequisiteId": "h2_gr_yijiu"
  },
  {
   "topicId": "h6_gr_compound_coord",
   "prerequisiteId": "h5_gr_023"
  },
  {
   "topicId": "h6_gr_compound_progressive",
   "prerequisiteId": "h6_root_grammar"
  },
  {
   "topicId": "h6_gr_compound_progressive",
   "prerequisiteId": "h6_gr_conjunctions"
  },
  {
   "topicId": "h6_gr_compound_progressive",
   "prerequisiteId": "gr_budan_erqie"
  },
  {
   "topicId": "h6_gr_compound_progressive",
   "prerequisiteId": "h5_gr_023"
  },
  {
   "topicId": "h6_gr_compound_cond",
   "prerequisiteId": "h6_root_grammar"
  },
  {
   "topicId": "h6_gr_compound_cond",
   "prerequisiteId": "h6_gr_compound_coord"
  },
  {
   "topicId": "h6_gr_compound_cond",
   "prerequisiteId": "h6_gr_compound_progressive"
  },
  {
   "topicId": "h6_gr_compound_cond",
   "prerequisiteId": "gr_zhiyao_cai"
  },
  {
   "topicId": "h6_gr_compound_cond",
   "prerequisiteId": "gr_wulun"
  },
  {
   "topicId": "h6_gr_compound_cond",
   "prerequisiteId": "h5_gr_023"
  },
  {
   "topicId": "h6_gr_multilayer",
   "prerequisiteId": "h6_gr_compound_coord"
  },
  {
   "topicId": "h6_gr_multilayer",
   "prerequisiteId": "h6_gr_compound_progressive"
  },
  {
   "topicId": "h6_gr_multilayer",
   "prerequisiteId": "h6_gr_compound_cond"
  },
  {
   "topicId": "h6_gr_multilayer",
   "prerequisiteId": "h5_gr_027"
  },
  {
   "topicId": "h6_gr_emphasis",
   "prerequisiteId": "h6_root_grammar"
  },
  {
   "topicId": "h6_gr_emphasis",
   "prerequisiteId": "gr_fei_buke"
  },
  {
   "topicId": "h6_gr_colloquial",
   "prerequisiteId": "h6_root_grammar"
  },
  {
   "topicId": "h6_gr_colloquial",
   "prerequisiteId": "h6_gr_fixed_expressions"
  },
  {
   "topicId": "h6_sk_idiom_comprehension",
   "prerequisiteId": "h6_root_vocab"
  },
  {
   "topicId": "h6_sk_idiom_comprehension",
   "prerequisiteId": "h6_gr_four_char_patterns"
  },
  {
   "topicId": "h6_sk_idiom_comprehension",
   "prerequisiteId": "h5_sk_004"
  },
  {
   "topicId": "h6_sk_formal_register",
   "prerequisiteId": "h6_root_vocab"
  },
  {
   "topicId": "h6_sk_formal_register",
   "prerequisiteId": "h6_gr_dem_pronouns"
  },
  {
   "topicId": "h6_sk_formal_register",
   "prerequisiteId": "h6_gr_particles"
  },
  {
   "topicId": "h6_sk_formal_register",
   "prerequisiteId": "h6_gr_prep_causal"
  },
  {
   "topicId": "h6_sk_formal_register",
   "prerequisiteId": "h5_sk_001"
  },
  {
   "topicId": "h6_sk_long_passage",
   "prerequisiteId": "h6_sk_formal_register"
  },
  {
   "topicId": "h6_sk_long_passage",
   "prerequisiteId": "h6_gr_multilayer"
  },
  {
   "topicId": "h6_sk_long_passage",
   "prerequisiteId": "h6_gr_compound_cond"
  },
  {
   "topicId": "h6_sk_long_passage",
   "prerequisiteId": "h5_sk_001"
  },
  {
   "topicId": "h6_sk_classical_flavor",
   "prerequisiteId": "h6_sk_formal_register"
  },
  {
   "topicId": "h6_sk_classical_flavor",
   "prerequisiteId": "h6_gr_affixes"
  },
  {
   "topicId": "h6_sk_classical_flavor",
   "prerequisiteId": "h6_gr_conjunctions"
  },
  {
   "topicId": "h6_sk_classical_flavor",
   "prerequisiteId": "h5_sk_002"
  },
  {
   "topicId": "h6_sk_error_spotting",
   "prerequisiteId": "h6_gr_ba_bei_advanced"
  },
  {
   "topicId": "h6_sk_error_spotting",
   "prerequisiteId": "h6_gr_compound_cond"
  },
  {
   "topicId": "h6_sk_error_spotting",
   "prerequisiteId": "h6_gr_fixed_expressions"
  },
  {
   "topicId": "h6_sk_error_spotting",
   "prerequisiteId": "h6_sk_formal_register"
  },
  {
   "topicId": "h6_sk_error_spotting",
   "prerequisiteId": "h5_sk_005"
  },
  {
   "topicId": "h6_capstone",
   "prerequisiteId": "h6_gr_multilayer"
  },
  {
   "topicId": "h6_capstone",
   "prerequisiteId": "h6_gr_colloquial"
  },
  {
   "topicId": "h6_capstone",
   "prerequisiteId": "h6_gr_emphasis"
  },
  {
   "topicId": "h6_capstone",
   "prerequisiteId": "h6_sk_long_passage"
  },
  {
   "topicId": "h6_capstone",
   "prerequisiteId": "h6_sk_error_spotting"
  },
  {
   "topicId": "h6_capstone",
   "prerequisiteId": "h6_sk_idiom_comprehension"
  },
  {
   "topicId": "h6_capstone",
   "prerequisiteId": "h6_sk_classical_flavor"
  },
  {
   "topicId": "h6_vca_dense_prepare",
   "prerequisiteId": "h6_root_vocab"
  },
  {
   "topicId": "h6_vca_situation_transmit",
   "prerequisiteId": "h6_root_vocab"
  },
  {
   "topicId": "h6_vca_create_boast",
   "prerequisiteId": "h6_root_vocab"
  },
  {
   "topicId": "h6_vca_serve_cluster",
   "prerequisiteId": "h6_root_vocab"
  },
  {
   "topicId": "h6_vca_achieve_reply",
   "prerequisiteId": "h6_root_vocab"
  },
  {
   "topicId": "h6_vca_general_arrest",
   "prerequisiteId": "h6_root_vocab"
  },
  {
   "topicId": "h6_vca_water_protein",
   "prerequisiteId": "h6_root_vocab"
  },
  {
   "topicId": "h6_vca_navigate_geology",
   "prerequisiteId": "h6_root_vocab"
  },
  {
   "topicId": "h6_vca_register_grade",
   "prerequisiteId": "h6_root_vocab"
  },
  {
   "topicId": "h6_vca_power_cave",
   "prerequisiteId": "h6_root_vocab"
  },
  {
   "topicId": "h6_vca_warn_pocket",
   "prerequisiteId": "h6_root_vocab"
  },
  {
   "topicId": "h6_vca_mobilize_freeze",
   "prerequisiteId": "h6_root_vocab"
  },
  {
   "topicId": "h6_vca_end_festival",
   "prerequisiteId": "h6_root_vocab"
  },
  {
   "topicId": "h6_vca_correspond_convert",
   "prerequisiteId": "h6_root_vocab"
  },
  {
   "topicId": "h6_vca_grudge_earring",
   "prerequisiteId": "h6_root_vocab"
  },
  {
   "topicId": "h6_vca_develop_legal",
   "prerequisiteId": "h6_root_vocab"
  },
  {
   "topicId": "h6_vca_reflect_flood",
   "prerequisiteId": "h6_root_vocab"
  },
  {
   "topicId": "h6_vca_textile_radiate",
   "prerequisiteId": "h6_root_vocab"
  },
  {
   "topicId": "h6_vca_propriety_split",
   "prerequisiteId": "h6_root_vocab"
  },
  {
   "topicId": "h6_vca_harvest_storm",
   "prerequisiteId": "h6_root_vocab"
  },
  {
   "topicId": "h6_vca_offer_veto",
   "prerequisiteId": "h6_root_vocab"
  },
  {
   "topicId": "h6_vca_corruption_burden",
   "prerequisiteId": "h6_root_vocab"
  },
  {
   "topicId": "h6_vca_lady_improve",
   "prerequisiteId": "h6_root_vocab"
  },
  {
   "topicId": "h6_vca_harbor_peak",
   "prerequisiteId": "h6_root_vocab"
  },
  {
   "topicId": "h6_vca_praise_structure",
   "prerequisiteId": "h6_root_vocab"
  },
  {
   "topicId": "h6_vca_correct_craft",
   "prerequisiteId": "h6_root_vocab"
  },
  {
   "topicId": "h6_vca_merit_attack",
   "prerequisiteId": "h6_root_vocab"
  },
  {
   "topicId": "h6_vca_design_lonely",
   "prerequisiteId": "h6_root_vocab"
  },
  {
   "topicId": "h6_vca_malfunction_adviser",
   "prerequisiteId": "h6_root_vocab"
  },
  {
   "topicId": "h6_vca_vast_republic",
   "prerequisiteId": "h6_root_vocab"
  },
  {
   "topicId": "h6_vca_excessive_filter",
   "prerequisiteId": "h6_root_vocab"
  },
  {
   "topicId": "h6_vca_rare_aviation",
   "prerequisiteId": "h6_root_vocab"
  },
  {
   "topicId": "h6_vca_harmony_kindness",
   "prerequisiteId": "h6_root_vocab"
  },
  {
   "topicId": "h6_vca_redpacket_flood",
   "prerequisiteId": "h6_root_vocab"
  },
  {
   "topicId": "h6_vca_overseas_fossil",
   "prerequisiteId": "h6_root_vocab"
  },
  {
   "topicId": "h6_vca_joy_dusk",
   "prerequisiteId": "h6_root_vocab"
  },
  {
   "topicId": "h6_vcb_brilliance_return",
   "prerequisiteId": "h6_root_vocab"
  },
  {
   "topicId": "h6_vcb_vitality_fire",
   "prerequisiteId": "h6_root_vocab"
  },
  {
   "topicId": "h6_vcb_mockery_machine",
   "prerequisiteId": "h6_root_vocab"
  },
  {
   "topicId": "h6_vcb_signs_genes_inspire",
   "prerequisiteId": "h6_root_vocab"
  },
  {
   "topicId": "h6_vcb_time_luck_extreme",
   "prerequisiteId": "h6_root_vocab"
  },
  {
   "topicId": "h6_vcb_identity_memory",
   "prerequisiteId": "h6_root_vocab"
  },
  {
   "topicId": "h6_vcb_family_process",
   "prerequisiteId": "h6_root_vocab"
  },
  {
   "topicId": "h6_vcb_firm_sharp",
   "prerequisiteId": "h6_root_vocab"
  },
  {
   "topicId": "h6_vcb_espionage_oversight",
   "prerequisiteId": "h6_root_vocab"
  },
  {
   "topicId": "h6_vcb_simplify_insight",
   "prerequisiteId": "h6_root_vocab"
  },
  {
   "topicId": "h6_vcb_health_appraisal",
   "prerequisiteId": "h6_root_vocab"
  },
  {
   "topicId": "h6_vcb_military_reward",
   "prerequisiteId": "h6_root_vocab"
  },
  {
   "topicId": "h6_vcb_descent_trade",
   "prerequisiteId": "h6_root_vocab"
  },
  {
   "topicId": "h6_vcb_focus_tangle",
   "prerequisiteId": "h6_root_vocab"
  },
  {
   "topicId": "h6_vcb_education_class",
   "prerequisiteId": "h6_root_vocab"
  },
  {
   "topicId": "h6_vcb_excellence_settle",
   "prerequisiteId": "h6_root_vocab"
  },
  {
   "topicId": "h6_vcb_effort_dissolve",
   "prerequisiteId": "h6_root_vocab"
  },
  {
   "topicId": "h6_vcb_finance_progress",
   "prerequisiteId": "h6_root_vocab"
  },
  {
   "topicId": "h6_vcb_precision_business",
   "prerequisiteId": "h6_root_vocab"
  },
  {
   "topicId": "h6_vcb_well_alert",
   "prerequisiteId": "h6_root_vocab"
  },
  {
   "topicId": "h6_vcb_dispute_relief",
   "prerequisiteId": "h6_root_vocab"
  },
  {
   "topicId": "h6_vcb_employment_residence",
   "prerequisiteId": "h6_root_vocab"
  },
  {
   "topicId": "h6_vcb_heroic_despair",
   "prerequisiteId": "h6_root_vocab"
  },
  {
   "topicId": "h6_vcb_military_mining",
   "prerequisiteId": "h6_root_vocab"
  },
  {
   "topicId": "h6_vcb_inspection_science",
   "prerequisiteId": "h6_root_vocab"
  },
  {
   "topicId": "h6_vcb_sincerity_space",
   "prerequisiteId": "h6_root_vocab"
  },
  {
   "topicId": "h6_vcb_fear_oral",
   "prerequisiteId": "h6_root_vocab"
  },
  {
   "topicId": "h6_vcb_wither_carry",
   "prerequisiteId": "h6_root_vocab"
  },
  {
   "topicId": "h6_vcb_loss_expand",
   "prerequisiteId": "h6_root_vocab"
  },
  {
   "topicId": "h6_vcb_horn_history",
   "prerequisiteId": "h6_root_vocab"
  },
  {
   "topicId": "h6_vcb_discontent_music",
   "prerequisiteId": "h6_root_vocab"
  },
  {
   "topicId": "h6_vcb_dawn_etiquette",
   "prerequisiteId": "h6_root_vocab"
  },
  {
   "topicId": "h6_vcb_ability_position",
   "prerequisiteId": "h6_root_vocab"
  },
  {
   "topicId": "h6_vcb_alliance_conscience",
   "prerequisiteId": "h6_root_vocab"
  },
  {
   "topicId": "h6_vcb_soul_sensitivity",
   "prerequisiteId": "h6_root_vocab"
  },
  {
   "topicId": "h6_vcb_wandering_nostalgia",
   "prerequisiteId": "h6_root_vocab"
  },
  {
   "topicId": "h6_vcb_stove_wheel",
   "prerequisiteId": "h6_root_vocab"
  },
  {
   "topicId": "h6_vcb_paralysis_burial",
   "prerequisiteId": "h6_root_vocab"
  },
  {
   "topicId": "h6_vcb_spread_blind",
   "prerequisiteId": "h6_root_vocab"
  },
  {
   "topicId": "h6_vcb_beauty_fierce",
   "prerequisiteId": "h6_root_vocab"
  },
  {
   "topicId": "h6_vcb_seal_immunity",
   "prerequisiteId": "h6_root_vocab"
  },
  {
   "topicId": "h6_vcb_sensitivity_name",
   "prerequisiteId": "h6_root_vocab"
  },
  {
   "topicId": "h6_vcb_model_magic",
   "prerequisiteId": "h6_root_vocab"
  },
  {
   "topicId": "h6_vcb_seek_witness",
   "prerequisiteId": "h6_root_vocab"
  },
  {
   "topicId": "h6_vcb_precious_inner",
   "prerequisiteId": "h6_root_vocab"
  },
  {
   "topicId": "h6_vcb_gaze_reverse",
   "prerequisiteId": "h6_root_vocab"
  },
  {
   "topicId": "h6_vcb_rejection_pace",
   "prerequisiteId": "h6_root_vocab"
  },
  {
   "topicId": "h6_vcb_abandon_train",
   "prerequisiteId": "h6_root_vocab"
  },
  {
   "topicId": "h6_vcb_fatigue_bias",
   "prerequisiteId": "h6_root_vocab"
  },
  {
   "topicId": "h6_vcb_struggle_poverty",
   "prerequisiteId": "h6_root_vocab"
  },
  {
   "topicId": "h6_vcb_evaluate_barrier",
   "prerequisiteId": "h6_root_vocab"
  },
  {
   "topicId": "h6_vcb_throw_waterfall",
   "prerequisiteId": "h6_root_vocab"
  },
  {
   "topicId": "h6_vcb_deception_wonderful",
   "prerequisiteId": "h6_root_vocab"
  },
  {
   "topicId": "h6_vcb_rise_origin",
   "prerequisiteId": "h6_root_vocab"
  },
  {
   "topicId": "h6_vcb_pinch_migrate",
   "prerequisiteId": "h6_root_vocab"
  },
  {
   "topicId": "h6_vcb_prospect_condemn",
   "prerequisiteId": "h6_root_vocab"
  },
  {
   "topicId": "h6_vcb_feasibility_diligent",
   "prerequisiteId": "h6_root_vocab"
  },
  {
   "topicId": "h6_vcb_morning_clarity",
   "prerequisiteId": "h6_root_vocab"
  },
  {
   "topicId": "h6_vcb_region_music",
   "prerequisiteId": "h6_root_vocab"
  },
  {
   "topicId": "h6_vcb_rights_defect",
   "prerequisiteId": "h6_root_vocab"
  },
  {
   "topicId": "h6_vcb_mass_concede",
   "prerequisiteId": "h6_root_vocab"
  },
  {
   "topicId": "h6_vcb_human_nature",
   "prerequisiteId": "h6_root_vocab"
  },
  {
   "topicId": "h6_vcb_daily_tolerance",
   "prerequisiteId": "h6_root_vocab"
  },
  {
   "topicId": "h6_vcb_lies_cheek",
   "prerequisiteId": "h6_root_vocab"
  },
  {
   "topicId": "h6_vcb_expertise_commerce",
   "prerequisiteId": "h6_root_vocab"
  },
  {
   "topicId": "h6_vcb_involve_declare",
   "prerequisiteId": "h6_root_vocab"
  },
  {
   "topicId": "h6_vcb_judicial_permeate",
   "prerequisiteId": "h6_root_vocab"
  },
  {
   "topicId": "h6_vcb_reproduction_voice",
   "prerequisiteId": "h6_root_vocab"
  },
  {
   "topicId": "h6_vcb_oil_time_fashion",
   "prerequisiteId": "h6_root_vocab"
  },
  {
   "topicId": "h6_vcb_generation_worldview",
   "prerequisiteId": "h6_root_vocab"
  },
  {
   "topicId": "h6_vcc_perception_recognition",
   "prerequisiteId": "h6_root_vocab"
  },
  {
   "topicId": "h6_vcc_craft_calligraphy",
   "prerequisiteId": "h6_root_vocab"
  },
  {
   "topicId": "h6_vcc_texts_binding_numbers",
   "prerequisiteId": "h6_root_vocab"
  },
  {
   "topicId": "h6_vcc_water_law_thought",
   "prerequisiteId": "h6_root_vocab"
  },
  {
   "topicId": "h6_vcc_mortality_quality_search",
   "prerequisiteId": "h6_root_vocab"
  },
  {
   "topicId": "h6_vcc_spontaneity_time_tunnels",
   "prerequisiteId": "h6_root_vocab"
  },
  {
   "topicId": "h6_vcc_greed_corruption_exploration",
   "prerequisiteId": "h6_root_vocab"
  },
  {
   "topicId": "h6_vcc_ceramics_elimination_promotion",
   "prerequisiteId": "h6_root_vocab"
  },
  {
   "topicId": "h6_vcc_talent_nature_athletics",
   "prerequisiteId": "h6_root_vocab"
  },
  {
   "topicId": "h6_vcc_treaties_pause_currency",
   "prerequisiteId": "h6_root_vocab"
  },
  {
   "topicId": "h6_vcc_folklore_planning_voting",
   "prerequisiteId": "h6_root_vocab"
  },
  {
   "topicId": "h6_vcc_unity_reasoning_delay",
   "prerequisiteId": "h6_root_vocab"
  },
  {
   "topicId": "h6_vcc_compromise_excavation",
   "prerequisiteId": "h6_root_vocab"
  },
  {
   "topicId": "h6_vcc_tenacity_regret_internet",
   "prerequisiteId": "h6_root_vocab"
  },
  {
   "topicId": "h6_vcc_might_prestige_maintain",
   "prerequisiteId": "h6_root_vocab"
  },
  {
   "topicId": "h6_vcc_satellite_culture_docs",
   "prerequisiteId": "h6_root_vocab"
  },
  {
   "topicId": "h6_vcc_slander_shameless_idioms",
   "prerequisiteId": "h6_root_vocab"
  },
  {
   "topicId": "h6_vcc_helpless_chivalry_dance",
   "prerequisiteId": "h6_root_vocab"
  },
  {
   "topicId": "h6_vcc_materials_error_sacrifice",
   "prerequisiteId": "h6_root_vocab"
  },
  {
   "topicId": "h6_vcc_attack_joy_biology",
   "prerequisiteId": "h6_root_vocab"
  },
  {
   "topicId": "h6_vcc_progress_vague_suspicion",
   "prerequisiteId": "h6_root_vocab"
  },
  {
   "topicId": "h6_vcc_constitution_status_rural",
   "prerequisiteId": "h6_root_vocab"
  },
  {
   "topicId": "h6_vcc_aspiration_elimination_caution",
   "prerequisiteId": "h6_root_vocab"
  },
  {
   "topicId": "h6_vcc_cooperation_writing_mentality",
   "prerequisiteId": "h6_root_vocab"
  },
  {
   "topicId": "h6_vcc_diligence_faith_vitality",
   "prerequisiteId": "h6_root_vocab"
  },
  {
   "topicId": "h6_vcc_governance_spirit_temperament",
   "prerequisiteId": "h6_root_vocab"
  },
  {
   "topicId": "h6_vcc_ferocity_repair_shame",
   "prerequisiteId": "h6_root_vocab"
  },
  {
   "topicId": "h6_vcc_vanity_proclamation_selection",
   "prerequisiteId": "h6_root_vocab"
  },
  {
   "topicId": "h6_vcc_academia_patrol_oppression",
   "prerequisiteId": "h6_root_vocab"
  },
  {
   "topicId": "h6_vcc_pressure_extension_severity",
   "prerequisiteId": "h6_root_vocab"
  },
  {
   "topicId": "h6_vcc_severity_coastal_gaze",
   "prerequisiteId": "h6_root_vocab"
  },
  {
   "topicId": "h6_vcc_performance_verification_rumor",
   "prerequisiteId": "h6_root_vocab"
  },
  {
   "topicId": "h6_vcc_distance_rage_idioms",
   "prerequisiteId": "h6_root_vocab"
  },
  {
   "topicId": "h6_vcc_consistency_reliance_clothing",
   "prerequisiteId": "h6_root_vocab"
  },
  {
   "topicId": "h6_vcc_ceremony_heritage_doubt",
   "prerequisiteId": "h6_root_vocab"
  },
  {
   "topicId": "h6_vcc_consciousness_will_guidance",
   "prerequisiteId": "h6_root_vocab"
  },
  {
   "topicId": "h6_vcc_diet_secrecy_heroism",
   "prerequisiteId": "h6_root_vocab"
  },
  {
   "topicId": "h6_vcc_support_eternity_excellence",
   "prerequisiteId": "h6_root_vocab"
  },
  {
   "topicId": "h6_vcc_depression_fishermen_opinion",
   "prerequisiteId": "h6_root_vocab"
  },
  {
   "topicId": "h6_vcc_forecasting_desire_fable",
   "prerequisiteId": "h6_root_vocab"
  },
  {
   "topicId": "h6_vcc_garden_principle_constraint",
   "prerequisiteId": "h6_root_vocab"
  },
  {
   "topicId": "h6_vcc_reserves_disaster_praise",
   "prerequisiteId": "h6_root_vocab"
  },
  {
   "topicId": "h6_vcc_praise_rebellion_crime",
   "prerequisiteId": "h6_root_vocab"
  },
  {
   "topicId": "h6_vcc_resolute_display_fraud",
   "prerequisiteId": "h6_root_vocab"
  },
  {
   "topicId": "h6_vcc_battle_strategy_barriers",
   "prerequisiteId": "h6_root_vocab"
  },
  {
   "topicId": "h6_vcc_care_shelter_detective",
   "prerequisiteId": "h6_root_vocab"
  },
  {
   "topicId": "h6_vcc_precious_sincere_calm",
   "prerequisiteId": "h6_root_vocab"
  },
  {
   "topicId": "h6_vcc_dispute_conquest_rectification",
   "prerequisiteId": "h6_root_vocab"
  },
  {
   "topicId": "h6_vcc_justice_governance_support",
   "prerequisiteId": "h6_root_vocab"
  },
  {
   "topicId": "h6_vcc_perception_occupation_directives",
   "prerequisiteId": "h6_root_vocab"
  },
  {
   "topicId": "h6_vcc_compass_control_governance",
   "prerequisiteId": "h6_root_vocab"
  },
  {
   "topicId": "h6_vcc_intelligence_loyalty_endpoint",
   "prerequisiteId": "h6_root_vocab"
  },
  {
   "topicId": "h6_vcc_termination_tumor_festivals",
   "prerequisiteId": "h6_root_vocab"
  },
  {
   "topicId": "h6_vcc_cycle_wrinkle_leadership",
   "prerequisiteId": "h6_root_vocab"
  },
  {
   "topicId": "h6_vcc_dwelling_assistance_specialty",
   "prerequisiteId": "h6_root_vocab"
  },
  {
   "topicId": "h6_vcc_patent_transfer_solemn",
   "prerequisiteId": "h6_root_vocab"
  },
  {
   "topicId": "h6_vcc_bravery_norms_capital",
   "prerequisiteId": "h6_root_vocab"
  },
  {
   "topicId": "h6_vcc_selfreliance_objectives_smuggling",
   "prerequisiteId": "h6_root_vocab"
  },
  {
   "topicId": "h6_vcc_obstruction_dignity_polish",
   "prerequisiteId": "h6_root_vocab"
  },
  {
   "topicId": "h6_vcc_lifestyle_work_motto",
   "prerequisiteId": "h6_root_vocab"
  }
 ]
}
