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