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