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