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