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