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