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