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