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