Can we write a CFG (Context Free Grammar) for the set of all non-empty string whose length are multiple of 3 on the alphabet $ \Sigma = \{A,R,G,C\} $
2026-03-26 04:23:22.1774499002
Finding the CFG (Context Free Grammar) of a language
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Hint. A non-empty word whose length is a multiple of $3$ has either length $3$ or consist of a non-empty word whose length is $3$ and a non-empty word whose length is a multiple of $3$.