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

<degree_number-not_initial_zero-90-not_digit_sequence-pl>

<tens> <digit-not_zero>

<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>

<point_id>

<digit-not_zero>

<tens_number-not_digit_sequence-pl>

<tens> <digit-not_zero>

<group_contact_id>

<group_prefix> <digit-not_zero>

<tens_number-not_digit_sequence>

<digit-not_zero>

<tens> <digit-not_zero>

<air_speed_number>

<digit-not_zero> <digit> <digit>

<digit-not_zero> hundred

<digit-not_zero> hundred <number>

<up_to_two_digits>

<digit-not_zero>

<minutes-not_digit_sequence-pl>

<tenminutes> <digit-not_zero>

<minute_duration-pl>

<tenminutes> <digit-not_zero>

<tens_number>

<digit-not_zero>

<digit-not_zero> <digit>

<tens> <digit-not_zero>

<point_name_mod>

<name_adj> <digit-not_zero>

<tens_number-complete_number-pl>

<digit-not_zero> <digit>

<tens> <digit-not_zero>

<degree_number-180-not_digit_sequence-pl>

<tens> <digit-not_zero>