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