The category "<degree_number-180-digit_sequence-pl>" can be expressed as follows:
<digit> <digit>
<digit-0> <digit_not_one> <digit>
<digit-0-pl> <digit-1> <digit>
<digit-1> <digit-8> <digit-0>
<digit-1> <digit_zero_to_seven> <digit>
oh_one <digit>