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