The category "<company_id-not_creatable-pl>" can be expressed as follows:

<company_id-not_creatable-pl>

<company_type-not_creatable-pl>

<company_type-pl> <id_letter-pl>

<company_type-pl> <id_num-pl>

<id_letter-pl> <company_noun-pl>

<ordinal-pl> <company_type-pl>