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