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