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