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