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