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