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