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