The rules that use the vocabulary item "btr-60" are:

<i_f_v-sing>

btr-60 c2

btr-60 command and control

swa btr-60 pu

<i_f_v-pl>

btr-60 c2s

btr-60 command and controls

swa btr-60 pus

<i_f_v>

btr-60 c2

btr-60 c2s

btr-60 command and control

btr-60 command and controls

swa btr-60 pu

swa btr-60 pus