{
    "Threshold": ["T_0_2a", "T_0_2b", "T_0_2c", "T_0_2d"],
    "Low": ["L_3_3", "L_2_9", "L_6_0"],
    "Moderate": ["M_7_3", "M_6_2", "M_5_6"],
    "Extreme": ["E_7_2", "E_8_7a", "E_5_7", "E_8_7b"],
    "Non_bitter": ["T_0_2a", "T_0_2b", "T_0_2c", "T_0_2d", "L_3_3", "L_2_9", "L_6_0"],
    "Bitter": ["M_7_3", "M_6_2", "M_5_6", "E_7_2", "E_8_7a", "E_5_7", "E_8_7b"]
}