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