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