disposing {HEAD ~ the body} within {TAIL ~ the cavity} such that the inner layer contacts the body in a first position 
within
disposing { HEAD ~ the body } within { TAIL ~ the cavity } such that the inner layer contacts the body in a first position
OTH 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