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