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