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