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