Is it possible to make a keygenerator with 1000 codes?

Question

Programming

codes look like this:
33JY-X4FK7C-ZDXF
7WGM-X5NWJ3-BQ2H
BT6S-EYHZ9E-5BNA
8Y3S-9FL4ZD-MU2E
there are about 1000 real codes

Answer 1

If you find a pattern in all these codes. Usually several characters contain a checksum. The main thing is to understand which ones and by what algorithm to count them.
But usually they do otherwise - they disassemble the code itself, which checks the key for validity.

Answer 2

In the general case, it is impossible: Baba-Klava, who takes out balls with letters from a black box, will not allow it. Further, it depends. You can make a generator using 1 single code.