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