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