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