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