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