The shape of {HEAD ~ the centrally disposed opening} 70 can conform to {TAIL ~ the article} being handled 
The shape of { HEAD ~ the centrally disposed opening } 70 can conform to { TAIL ~ the article } being handled
OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH