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