{TAIL ~ The players} repeat {HEAD ~ their turn} until play is terminated when a completed word is formed or when all players in rotation have elected to not attempt to place a playing piece on one of the playing spaces, whichever occurs first 
{ TAIL ~ The players } repeat { HEAD ~ their turn } until play is terminated when a completed word is formed or when all players in rotation have elected to not attempt to place a playing piece on one of the playing spaces , whichever occurs first
TAIL TAIL TAIL TAIL TAIL TAIL OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH