The body member includes a cavity on its first end which terminates by {TAIL ~ an end wall} at {HEAD ~ its second end} 
The body member includes a cavity on its first end which terminates by { TAIL ~ an end wall } at { HEAD ~ its second end }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD