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