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