The crotch portion 10 includes {HEAD ~ a pair} of {TAIL ~ convergent side edges} 12 and 14, and an elongated securing edge 16 which extends between, and intersects the side edges 12 and 14 
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The crotch portion 10 includes { HEAD ~ a pair } of { TAIL ~ convergent side edges } 12 and 14 , and an elongated securing edge 16 which extends between , and intersects the side edges 12 and 14
OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH