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