Together, cylinder head lower wall 16 and piston upper portion 18 define {HEAD ~ a combustion chamber} 19 for {TAIL ~ each respective cylinder} 12 
for
Together , cylinder head lower wall 16 and piston upper portion 18 define { HEAD ~ a combustion chamber } 19 for { TAIL ~ each respective cylinder } 12
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH