The apparatus includes {HEAD ~ a combustion chamber communicating} with an air intake passage and {TAIL ~ an air exhaust passage} 
with
The apparatus includes { HEAD ~ a combustion chamber communicating } with an air intake passage and { TAIL ~ an air exhaust passage }
OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL