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