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