That is, they are formed during the course of and as a result of a fabrication sequence that requires no manipulation or {HEAD ~ assembly} of {TAIL ~ separate components} 
of
That is , they are formed during the course of and as a result of a fabrication sequence that requires no manipulation or { HEAD ~ assembly } of { TAIL ~ separate components }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL