CHECKER	3	3
[0,0,1,0,-1,0]	[1,0,2,0,0,1]	[2,0,1,1,3,1]	
[0,1,1,1,-1,1]	[1,1,2,1,0,2]	[2,1,1,2,3,2]	
[0,2,1,2,-1,2]	[1,2,2,2,0,3]	[2,2,1,3,3,3]