20
13 14 15 16 11 18 17 12 20 19 
19 16 17 20 13 11 14 15 18 12 
15 14 12 17 19 11 18 13 16 20 
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13 17 11 15 16 20 12 14 19 18 
11 17 15 14 16 13 18 19 20 12 
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14 18 11 16 19 17 13 15 20 12 
18 19 13 16 17 14 12 11 20 15 
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