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