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