The category "<follow_unit_command-system_utterance-gapsout_pp_gap-gapsin_pp_gap>" can be expressed as follows:
<follow_unit_command-system_utterance-gapsout_pp_gap-gapsin_pp_gap> <move_mod-gapsout_pp_gap-gapsin_pp_gap-not_compass_direction>
<follow_unit_command-system_utterance-gapsout_pp_gap-gapsin_pp_gap-not_with_compass_direction> <move_mod-gapsout_pp_gap-gapsin_pp_gap-compass_direction>
<follow_unit_verb> <enemy_vehicles>
<follow_unit_verb> <other_unit-system_utterance-gapsout_pp_gap-gapsin_pp_gap>