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