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