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