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