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