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