The rules that use the vocabulary item "its" are:

<det-sing-def>

its

<det-sing>

its

<det-pl-not_wh_or_gq_or_dummy>

its

<det-sing-not_wh_or_gq_or_dummy>

its

<det-pl-not_wh>

its

<det-pl>

its

<det>

its

<det-sing-not_wh>

its

<det-pl-def>

its