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