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