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