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