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