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