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