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