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