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