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