When {HEAD ~ any} of the players has contributed to {TAIL ~ a word}, said number is multiplied by the sum of the value indicators on all of the pieces forming a part of the word to generate a product 
contributed to
When { HEAD ~ any } of the players has contributed to { TAIL ~ a word } , said number is multiplied by the sum of the value indicators on all of the pieces forming a part of the word to generate a product
OTH HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH REL 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 OTH OTH OTH OTH OTH