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