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

<i_f_v-sing>

astros an-ucf

astros c2

astros command and control

<i_f_v-pl>

astros an-ucfs

astros c2s

astros command and controls

<i_f_v>

astros an-ucf

astros an-ucfs

astros c2

astros c2s

astros command and control

astros command and controls