20
12 18 16 14 17 20 13 11 19 15 
14 11 17 16 13 15 20 12 19 18 
14 15 17 13 16 20 19 18 12 11 
18 20 17 19 16 13 11 14 15 12 
19 20 11 17 18 16 15 12 14 13 
11 18 12 16 14 13 15 19 20 17 
17 19 13 16 15 14 12 18 11 20 
19 11 14 13 18 12 15 20 17 16 
20 19 17 12 16 18 15 14 11 13 
13 15 11 18 16 17 12 14 20 19 
5 1 4 7 3 9 8 10 6 2 
3 4 5 2 7 1 8 10 9 6 
5 3 1 8 4 6 7 10 2 9 
7 4 5 3 9 10 8 6 2 1 
9 3 6 7 4 1 2 8 5 10 
5 9 4 7 8 6 3 2 10 1 
3 1 5 9 10 4 2 7 8 6 
4 9 2 3 8 1 5 10 7 6 
2 4 8 10 5 6 9 7 3 1 
9 4 5 3 1 10 6 7 2 8 
forbidden 1 11
forbidden 1 12
forbidden 1 13
forbidden 1 16
forbidden 1 17
forbidden 2 11
forbidden 2 12
forbidden 2 13
forbidden 3 12
forbidden 3 13
forbidden 3 14
forbidden 3 15
forbidden 3 17
forbidden 4 12
forbidden 4 13
forbidden 4 16
forbidden 4 18
forbidden 5 11
forbidden 5 12
forbidden 5 15
forbidden 5 16
forbidden 5 17
forbidden 6 14
forbidden 6 18
forbidden 6 19
forbidden 7 16
forbidden 7 18
forbidden 7 19
forbidden 8 12
forbidden 8 13
forbidden 8 14
forbidden 8 15
forbidden 8 17
forbidden 8 18
forbidden 9 11
forbidden 9 14
forbidden 9 15
forbidden 9 16
forbidden 9 18
forbidden 10 18
forbidden 10 19