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