Quote:Until now, I have no clue how should start
Looks like you need to learn programming, because even with very basic knowledge, you should be able to get started.
- when something have similarities from the outside, chances are that it also work similarly from the inside.
Quote:AAAA,AAAB,AAAC,AAAD and when it reach AAAZ, it will auto round up to AABA and continue the incremental.
This is counting with letters instead of digits.
For Counter = 0 to 27
// do something
In number conversion, modulo allow to extract the unit of a number
MyUnit = MyValue Mod 10
MyRemainder = MyValue \ 10
Repeat 4 times to get 4 digits/letters
Say that 0 is 'A', 1 is 'B' ...
you need to convert each unit to letter.
Now, switch to base 26