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