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