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