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