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