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Write a grammar in BNF for the language consisting of strings that have n copies of the letter 'x' followed by n + 3 copies
Write a grammar in BNF for the language consisting of strings that have n copies of the letter 'x' followed by n + 3 copies of the letter 'y' where n greaterthanorequalto 2. For example, the strings xxyyyyy, xxxxyyyyyyy, and xxxxxyyyyyyyy are in the language, but xyyy, xxxyyy, xxxxy are not. Use (S) as the starting symbol
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