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