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