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