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