The rules that use the vocabulary item "c2s" are:

<i_f_v-pl>

astros c2s

bmp2 c2s

lav c2s

opfor artillery battery c2s

xmg1s secondary c2s

<tank_type-pl>

swa t72 c2s

swa t72 tank c2s

swa t72-s c2s

<tank_type>

swa t72 c2s

swa t72 tank c2s

swa t72-s c2s

<i_f_v>

astros c2s

bmp2 c2s

lav c2s

opfor artillery battery c2s

xmg1s secondary c2s