The category "<degree_setting-not_digit_sequence-not_initial_zero-90>" can be expressed as follows:

<degree_setting-not_digit_sequence-not_initial_zero-90>

<degree_number-not_initial_zero-90-not_digit_sequence-pl> <degree_unit-pl>

<degree_number-not_initial_zero-90-not_digit_sequence-sing> <degree_unit-sing>