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