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