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