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