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