User blog comment:Googleaarex/Hundred Notation/@comment-25601061-20150109154220

Yes i got it. Dundred? What a funny name.

This can be extended by, making DCBA = CCC...CCCBA with 100 C's

We can make levels of letters, A is in the first level, B is in the second, C is in the third, etc.

Also B = BA.

If we continue adding letters to your notation, i think it may reach tetrational level.