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

<contact_type-simple>

<digit-not_zero-pl> <contact_type_nom-pl>

<contact_type-point_id_type_none-pl-simple-neutral>

<digit-not_zero-pl> <contact_type_nom-point_id_type_none-pl-neutral>

<up_to_two_digits-pl>

<digit-not_zero-pl>

<tens_number-pl>

<digit-not_zero-pl>

<contact_type-point_id_type_none-simple>

<digit-not_zero-pl> <contact_type_nom-point_id_type_none-pl>

<tens_number-not_digit_sequence-pl>

<digit-not_zero-pl>

<time_interval>

<digit-not_zero-pl> <time_interval_unit-hour-pl> and <minute_duration-pl> <time_interval_unit-minute-pl>

<digit-not_zero-pl> <time_interval_unit-hour-pl> and <minute_duration-sing> <time_interval_unit-minute-sing>

<contact_type-pl-neutral>

<digit-not_zero-pl> <contact_type_nom-pl-neutral>

<target_description>

<digit-not_zero-pl> <target_nom-pl>

<target_description-pl>

<digit-not_zero-pl> <target_nom-pl>

<contact_type>

<digit-not_zero-pl> <contact_type_nom-pl>

<digit-not_zero-pl> <contact_type_nom-point_id_type_none-pl>

<minute_duration-pl>

<digit-not_zero-pl>

<contact_type-point_id_type_none>

<digit-not_zero-pl> <contact_type_nom-point_id_type_none-pl>

<contact_type-point_id_type_none-pl-neutral>

<digit-not_zero-pl> <contact_type_nom-point_id_type_none-pl-neutral>