Thus, {HEAD ~ the winners} of {TAIL ~ these games} are generally primarily determined by the relative skills of the players participating in them 
of
Thus , { HEAD ~ the winners } of { TAIL ~ these games } are generally primarily determined by the relative skills of the players participating in them
OTH 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 OTH OTH