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0 1  0 11  0 12  0 13  0 14  0 15  0 16  0 17  0 18  0 19  0 20  0 21  1 2  1 3  1 4  1 5  1 6  1 7  1 8  1 9  1 10
0 1  0 10  0 11  0 12  0 13  0 14  0 15  0 16  0 17  0 18  0 19  0 20  0 21  1 2  1 3  1 4  1 5  1 6  1 7  1 8  1 9
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0 1  0 4  0 5  0 6  0 7  0 8  0 9  0 10  0 11  0 12  0 13  0 14  0 15  0 16  0 17  0 18  0 19  0 20  0 21  1 2  1 3
0 1  0 3  0 4  0 5  0 6  0 7  0 8  0 9  0 10  0 11  0 12  0 13  0 14  0 15  0 16  0 17  0 18  0 19  0 20  0 21  1 2
