The rules that use the category "<create_unit-gapsout_np_gap-gapsin_np_gap>" are:
<create_unit-gapsout_np_gap-gapsin_np_gap> <unit_mod-gapsout_np_gap-gapsin_np_gap>
<create_unit-gapsout_np_gap-gapsin_np_gap> <unit_mod-gapsout_null-gapsin_np_gap>