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