The rules that use the vocabulary item "c2" are:

<i_f_v-sing>

astros c2

bmp2 c2

opfor artillery battery c2

xmg1s secondary c2

<team_or_group_section_echelon>

mixed sp anti air c2

<tank_type>

swa t72 c2

swa t72 tank c2

swa t72-s c2

<i_f_v>

astros c2

bmp2 c2

opfor artillery battery c2

xmg1s secondary c2

<tank_type-sing>

swa t72 c2

swa t72 tank c2

swa t72-s c2