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