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