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