n12 1,2,3,4,5; 0,2,3,6,7; 0,1,5,6,8; 0,1,4,7,9; 0,3,5,9,10; 0,2,4,8,10; 1,2,7,8,11; 1,3,6,9,11; 2,5,6,10,11; 3,4,7,10,11; 4,5,8,9,11; 6,7,8,9,10.