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