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