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