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