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