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