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