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