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