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