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