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