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