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