{HEAD ~ A fuel delivery system} moves fuel through the passageway from the infeed end to {TAIL ~ the delivery end} 
{ HEAD ~ A fuel delivery system } moves fuel through the passageway from the infeed end to { TAIL ~ the delivery end }
HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL