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