The rules that use the vocabulary item "tank" are:
anti tank guided missile
anti tank recoilless
land rover anti tank
anti tank brdm
anti tank brdms
anti tank ditch
tank
tank
swa t72 tank c2s
swa t72 tank command and controls
swa t72 tank commands
anti tank
land rover anti tank
land rover recoilless anti tank
opfor anti tank
opfor land rover recoilless anti tank
opfor recoilless anti tank
swa anti tank
anti tank ditch
swa tank heavy combat team
tank heavy combat team
tank
opfor tank combat team headquarters
opfor tank combat team hq
opfor tank team headquarters
opfor tank team hq
tank combat team headquarters
tank combat team hq
tank heavy combat team headquarters
tank heavy combat team hq
anti tank
land rover anti tank
land rover recoilless anti tank
opfor anti tank
opfor land rover recoilless anti tank
opfor recoilless anti tank
swa anti tank
medium tank recovery vehicles
swa t72 tank c2
swa t72 tank c2s
swa t72 tank command
swa t72 tank command and control
swa t72 tank command and controls
swa t72 tank commands
medium tank recovery vehicle
anti tank brdm
anti tank brdms
medium tank recovery vehicles
medium tank recovery vehicle
anti tank
land rover anti tank
land rover recoilless anti tank
opfor anti tank
opfor land rover recoilless anti tank
opfor recoilless anti tank
swa anti tank
anti tank guided missile
anti tank recoilless
land rover anti tank
medium tank recovery vehicle
tank
anti tank guided missile
anti tank recoilless
land rover anti tank
swa t72 tank c2
swa t72 tank command
swa t72 tank command and control
medium tank recovery vehicle
medium tank recovery vehicles