30
29 23 30 17 28 25 26 21 16 18 20 22 19 27 24 
27 21 23 19 28 16 26 20 24 18 22 29 30 25 17 
24 21 23 18 28 27 26 29 20 22 17 25 30 19 16 
18 21 16 23 29 24 19 17 22 25 27 20 28 30 26 
29 20 30 23 18 22 25 26 24 27 16 21 28 19 17 
21 30 22 18 27 23 26 20 16 29 28 17 19 25 24 
24 26 28 29 25 16 22 19 27 30 23 20 17 18 21 
16 23 22 26 21 18 17 24 30 29 25 20 19 27 28 
18 21 26 27 24 19 30 17 20 23 29 25 16 28 22 
25 30 19 26 23 29 18 28 21 20 17 22 16 24 27 
25 26 18 22 27 20 28 30 17 19 21 16 23 24 29 
17 30 24 20 22 26 27 28 18 21 19 16 25 23 29 
27 25 22 20 24 29 30 16 18 21 17 26 28 19 23 
29 23 20 27 28 19 16 18 25 24 26 22 21 30 17 
30 22 20 24 16 25 26 28 19 23 27 18 21 29 17 
14 9 5 8 1 10 4 12 2 11 3 13 7 15 6 
1 9 12 14 6 13 4 15 2 3 11 8 10 7 5 
4 15 7 9 5 13 3 6 14 1 12 11 2 10 8 
3 6 1 12 7 15 5 2 11 4 9 14 13 8 10 
11 12 3 8 13 1 15 7 4 9 6 10 5 2 14 
1 13 4 5 8 15 6 3 2 12 11 9 7 14 10 
15 3 9 13 8 4 11 12 2 7 6 14 1 10 5 
11 8 14 7 4 2 13 15 1 6 5 10 3 9 12 
4 12 9 10 11 15 3 1 14 6 2 8 13 5 7 
8 7 3 1 13 5 14 10 12 11 9 4 2 15 6 
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6 8 12 13 1 7 15 14 11 9 4 2 10 3 5 
6 14 5 4 1 7 12 13 8 3 15 9 11 10 2 
3 11 7 10 6 8 1 13 15 2 14 12 4 5 9 
15 9 6 7 12 10 3 13 4 11 2 5 1 14 8 
forbidden 1 21
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