20
11 12 16 20 13 17 15 18 19 14 
18 17 20 15 11 14 16 19 13 12 
16 13 11 12 17 20 15 18 14 19 
13 17 20 14 11 18 12 19 16 15 
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4 3 2 8 5 10 6 9 7 1 
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