{TAIL ~ The base member}, post, and closure member may be composed of {HEAD ~ a wide variety} of materials 
{ TAIL ~ The base member } , post , and closure member may be composed of { HEAD ~ a wide variety } of materials
TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH