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