At that point its literally the whole alphabet...
“What will be discussed is the expansion of BRICS and the modalities of how this will happen,” he said. “Thirteen countries have formally asked to join and another six have asked informally. We are getting applications to join every day.”
Imagining :xinternet: handling all the requests as they come.
If all of the countries you just listed joined and got to be part of the acronym, here are a few possibilities for that acronym:
babe satanic virus
avarice basin stub
basin caviar tubes
abusive ban racist
abusive brain cats
causes rabbit vain
Rearrange this to "ban abusive racist" and it's very appropriate.