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