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