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