An ignition coil and {TAIL ~ spark plug} are associated with each cylinder of {HEAD ~ the engine} 
An ignition coil and { TAIL ~ spark plug } are associated with each cylinder of { HEAD ~ the engine }
OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD