Question: 13. Write a grammar for the language consisting of strings that have n copies of the letter a followed by the same number of copies

13. Write a grammar for the language consisting of strings that

13. Write a grammar for the language consisting of strings that have n copies of the letter a followed by the same number of copies of the letter b, where n >0. For example, the strings ab, aaaabbbb, and aaaaaaaabbbbbbbb are in the language but a, abb, ba, and aaabb are not

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