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