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