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