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