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