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