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