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