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