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