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