The rules that use the category "<adv>" are:

<verb_group-cop-pl>

<adv> <cop-pl>

<vp-system_utterance-inf-gapsout_null-gapsin_null-system>

<adv> <vp-system_utterance-inf-not_mod-gapsout_null-gapsin_null-system>

<vp-system_utterance-base-gapsout_null-gapsin_null-system>

<adv> <vp-system_utterance-base-not_mod-gapsout_null-gapsin_null-system>

<vp-user_response-base-gapsout_null-gapsin_null-system>

<adv> <vp-user_response-base-not_mod-gapsout_null-gapsin_null-system>

<vp-base-gapsout_null-gapsin_null-unit>

<adv> <vp-base-not_mod-gapsout_null-gapsin_null-unit>

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

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

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

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

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

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

<vp-user_response-base-gapsout_null-gapsin_null-unit>

<adv> <vp-user_response-base-not_mod-gapsout_null-gapsin_null-unit>

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

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

<vp-inf-gapsout_null-gapsin_null-unit>

<adv> <vp-inf-not_mod-gapsout_null-gapsin_null-unit>

<verb_group-cop-sing>

<adv> <cop-sing>