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