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. 14. Draw parse trees for the sentences aabb and aaaabbbb, as derived from the grammar of Problem 13

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