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