[
  "age_gt_60",
  "air",
  "airBoneGap",
  "ar_c",
  "ar_u",
  "bone",
  "boneAbnormal",
  "bser",
  "history_buzzing",
  "history_dizziness",
  "history_fluctuating",
  "history_fullness",
  "history_heredity",
  "history_nausea",
  "history_noise",
  "history_recruitment",
  "history_ringing",
  "history_roaring",
  "history_vomiting",
  "late_wave_poor",
  "m_at_2k",
  "m_cond_lt_1k",
  "m_gt_1k",
  "m_m_gt_2k",
  "m_m_sn",
  "m_m_sn_gt_1k",
  "m_m_sn_gt_2k",
  "m_m_sn_gt_500",
  "m_p_sn_gt_2k",
  "m_s_gt_500",
  "m_s_sn",
  "m_s_sn_gt_1k",
  "m_s_sn_gt_2k",
  "m_s_sn_gt_3k",
  "m_s_sn_gt_4k",
  "m_sn_2_3k",
  "m_sn_gt_1k",
  "m_sn_gt_2k",
  "m_sn_gt_3k",
  "m_sn_gt_4k",
  "m_sn_gt_500",
  "m_sn_gt_6k",
  "m_sn_lt_1k",
  "m_sn_lt_2k",
  "m_sn_lt_3k",
  "middle_wave_poor",
  "mod_gt_4k",
  "mod_mixed",
  "mod_s_mixed",
  "mod_s_sn_gt_500",
  "mod_sn",
  "mod_sn_gt_1k",
  "mod_sn_gt_2k",
  "mod_sn_gt_3k",
  "mod_sn_gt_4k",
  "mod_sn_gt_500",
  "notch_4k",
  "notch_at_4k",
  "o_ar_c",
  "o_ar_u",
  "s_sn_gt_1k",
  "s_sn_gt_2k",
  "s_sn_gt_4k",
  "speech",
  "static_normal",
  "tymp",
  "viith_nerve_signs",
  "wave_V_delayed",
  "waveform_ItoV_prolonged"
]