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