From a context-free grammar to regular expression?

Studente

New member
Hi, could you please describe the language generated by this grammar?

S -> A | Bbb
A -> aB
B -> aBb | ?

e.g. L={a^n b^m etc..

or the equivalent regular expression

Thanks
Thanks a lot, could you please help me with this variant?

S -> A | Bbb
A -> aB
B -> aAb | ?
 
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