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