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