The rules that use the category "<vp-system_utterance-fin-not_mod-gapsout_null-gapsin_null-unit>" are:

<vp-system_utterance-fin-gapsout_null-gapsin_null-unit>

<adv> <vp-system_utterance-fin-not_mod-gapsout_null-gapsin_null-unit>

<vp-system_utterance-fin-not_mod-gapsout_null-gapsin_null-unit> <subordinate_s>