Hey! I'm back with another math-related puzzle.
I'm guessing the answer I have to submit is a number set; there are obviously some numbers that appear more than once. (Not sure what the purpose of the commas are.)
The code may be something as simple as n = A, n+1 = B, n+2 = C, ..., or the letters may be jumbled and you'd have to rely on letter frequencies to guess their values, or else, some sort of brute force with a dictionary.
Just an idea.