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