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