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