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