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