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