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