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