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