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