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