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