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