Thus, the head of user 20 is placed into {HEAD ~ contact} with {TAIL ~ the inside surface} 48 of hood 12 
Thus , the head of user 20 is placed into { HEAD ~ contact } with { TAIL ~ the inside surface } 48 of hood 12
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH