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