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