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