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