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