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