Another object of {TAIL ~ the invention} is to provide such an engine having a working piston with {HEAD ~ a relatively long stroke} 
Another object of { TAIL ~ the invention } is to provide such an engine having a working piston with { HEAD ~ a relatively long stroke }
OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD