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