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