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