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