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