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