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