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