Next {HEAD ~ the body} is disposed within {TAIL ~ the cavity} such that the inner layer contacts the body in a first position 
is disposed within
Next { HEAD ~ the body } is disposed within { TAIL ~ the cavity } such that the inner layer contacts the body in a first position
OTH HEAD HEAD HEAD HEAD HEAD HEAD REL REL REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH