Order = maximum 3 letters per decade
My lottery 80/5
We have
A = 01 02 03 04 05 06 07 08 09 10
B = 11 12 13 14 ..... 20
C = 21 22 23 .... 30
D = 31 32 33 .... 40
E = 41 42 43 ..... 50
F = 51 52 53 .... 60
G = 61 62 63 ..... 70
H = 71 72 73 ..... 80
Example
Aaabb
Aaacc
Bccccc
....
Maximum 3 letters and minimum one letter
Go to aahhh