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