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