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