# Each line is one game.  First two listed players in each game form one team (a pair), 
# and the rest form the other team (a pair or a triple).
#
# No player partners any other more than once, and no player opposes any other more than once.
#
# Only 4 rounds are possible.
#
# Players 6 and 14 only ever play in a triple, and players 4 and 10 never do. This 
# imbalance might be avoidable, but I have not bothered to search for a better solution.

m19 = [
# Round 1:
	[
		[0, 1, 2, 3],
		[4, 5, 6, 7, 18],
		[10, 17, 8, 9, 11],
		[12, 13, 14, 15, 16]
	],
# Round 2:
	[
		[0, 7, 10, 13],
		[4, 18, 3, 9, 14],
		[8, 17, 2, 5, 15],
		[12, 16, 1, 6, 11]
	],
# Round 3:
	[
		[11, 16, 0, 5, 14],
		[1, 4, 10, 15],
		[3, 18, 6, 8, 13],
		[7, 12, 2, 9, 17]
	],
# Round 4:
	[
		[9, 15, 0, 6, 16],
		[2, 4, 11, 13],
		[1, 7, 8, 14, 18],
		[3, 10, 5, 17, 12]
	]
]