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