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