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