Each set can include a substantial number of identity cards to allow participation of {HEAD ~ a large number} of {TAIL ~ players} for one game or a smaller number of players for many rounds of play 
Each set can include a substantial number of identity cards to allow participation of { HEAD ~ a large number } of { TAIL ~ players } for one game or a smaller number of players for many rounds of play
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH