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