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