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