The rules that use the category "<call_sign_prefix>" are:
<det-not_other-pl-def> <call_sign_prefix> units
<det-not_other-pl-def> <call_sign_prefix> units <except> <unit-gapsout_null-gapsin_null-not_except>
<det-not_other-pl-deictic> <call_sign_prefix> units
<det-not_other-pl-deictic> <call_sign_prefix> units <except> <unit-gapsout_null-gapsin_null-not_except>
<det-not_other-pl-gq> <call_sign_prefix> units
<det-not_other-pl-gq> <call_sign_prefix> units <except> <unit-gapsout_null-gapsin_null-not_except>
<det-not_other-pl-def> <call_sign_prefix> units
<det-not_other-pl-def> <call_sign_prefix> units <except> <unit-gapsout_null-gapsin_null-not_except>
<det-not_other-pl-deictic> <call_sign_prefix> units
<det-not_other-pl-deictic> <call_sign_prefix> units <except> <unit-gapsout_null-gapsin_null-not_except>
<det-not_other-pl-gq> <call_sign_prefix> units
<det-not_other-pl-gq> <call_sign_prefix> units <except> <unit-gapsout_null-gapsin_null-not_except>
<det-not_other-pl-def> <call_sign_prefix> units
<det-not_other-pl-def> <call_sign_prefix> units <except> <unit-gapsout_null-gapsin_null-not_except>
<det-not_other-pl-deictic> <call_sign_prefix> units
<det-not_other-pl-deictic> <call_sign_prefix> units <except> <unit-gapsout_null-gapsin_null-not_except>
<det-not_other-pl-gq> <call_sign_prefix> units
<det-not_other-pl-gq> <call_sign_prefix> units <except> <unit-gapsout_null-gapsin_null-not_except>
<det-not_other-pl-def> <call_sign_prefix> units
<det-not_other-pl-def> <call_sign_prefix> units <except> <unit-gapsout_null-gapsin_null-not_except>
<det-not_other-pl-deictic> <call_sign_prefix> units
<det-not_other-pl-deictic> <call_sign_prefix> units <except> <unit-gapsout_null-gapsin_null-not_except>
<det-not_other-pl-gq> <call_sign_prefix> units
<det-not_other-pl-gq> <call_sign_prefix> units <except> <unit-gapsout_null-gapsin_null-not_except>
<det-not_other-pl-def> <call_sign_prefix> units
<det-not_other-pl-def> <call_sign_prefix> units
<det-not_other-pl-def> <call_sign_prefix> units <except> <unit-gapsout_null-gapsin_null-not_except>
<det-not_other-pl-deictic> <call_sign_prefix> units
<det-not_other-pl-deictic> <call_sign_prefix> units <except> <unit-gapsout_null-gapsin_null-not_except>
<det-not_other-pl-gq> <call_sign_prefix> units
<det-not_other-pl-gq> <call_sign_prefix> units <except> <unit-gapsout_null-gapsin_null-not_except>