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