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