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