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