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