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