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