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