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