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