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