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