The category "<contact_type-simple>" can be expressed as follows:

<contact_type-simple>

<contact_type_nom-pl>

<contact_type_nom-sing>

<det> <contact_type_nom>

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

<digit-not_zero-sing> <contact_type_nom-sing>

<ordinal-sing> <contact_type_nom-sing>