Each of {TAIL ~ the players} at his turn can, if he elects to contribute to a word, generate {HEAD ~ a number} of chance from a selected set of numbers 
Each of { TAIL ~ the players } at his turn can , if he elects to contribute to a word , generate { HEAD ~ a number } of chance from a selected set of numbers
OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH