The finishing of {HEAD ~ the shape} of {TAIL ~ the supporting body} is simple and has a lower cost 
of
The finishing of { HEAD ~ the shape } of { TAIL ~ the supporting body } is simple and has a lower cost
OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH