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