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