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