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