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