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