Upon {HEAD ~ removal} of {TAIL ~ lateral forces}, the temple automatically returns to its unbiased position 
of
Upon { HEAD ~ removal } of { TAIL ~ lateral forces } , the temple automatically returns to its unbiased position
OTH HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH