The rules that use the category "<digit-not_zero>" are:

<distance>

<digit-not_zero> <number>

<digit-not_zero> hundred

<digit-not_zero> hundred <number>

<tens_number-complete_number>

<digit-not_zero> <digit>

<tens> <digit-not_zero>

<minutes>

<tenminutes> <digit-not_zero>

<tens_number-pl>

<digit-not_zero> <digit>

<tens> <digit-not_zero>

<point_id-checkpoint>

<digit-not_zero>

<digit-not_zero> <digit>

<tens_number-not_digit_sequence-pl>

<tens> <digit-not_zero>

<id_num-sing>

<digit-not_zero>

<digit-not_zero> and <digit-not_zero>

<up_to_two_digits>

<digit-not_zero>

<point_name_mod>

<name_adj> <digit-not_zero>

<tens_number-complete_number-pl>

<digit-not_zero> <digit>

<tens> <digit-not_zero>

<tens_number-not_digit_sequence>

<digit-not_zero>

<tens> <digit-not_zero>

<up_to_thirty-pl>

twenty <digit-not_zero>

<minute_duration-pl>

<tenminutes> <digit-not_zero>

<id_num-num_all>

<digit-not_zero> and <digit-not_zero>

<tens_number>

<digit-not_zero>

<digit-not_zero> <digit>

<tens> <digit-not_zero>

<id_num-num_null>

<digit-not_zero> and <digit-not_zero>

<id_num-pl>

<digit-not_zero> and <digit-not_zero>

<name_operation-gapsout_null-gapsin_null>

<naming_verb> it <digit-not_zero>