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