"4.12" . . . . "Mark IV tank" . "Mark IV" . "Mark IV Female" . . . "IV" . "8.05" . . "Mark IV tank" . "Mark IVs" . . "Mark IV Tank" . . "tanks" . "tank" . . "early British tanks" . . "Tank Mk IV" . . "MK IV tank" . "British Mark IV" . . "Heavy Mk IV" . . . "Mk IV" .