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