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