Question: 13. Write a grammar for the language consisting of strings that have n copies of the letter a followed by one more 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 one more number of copies of the letter b, where n > 0. For example, the strings abb, aaaabbbbb, and aaaaaaaabbbbbbbbb are in the language but a, ab, ba, and aaabb are not. 14. Draw parse trees for the sentences abb and aabbb, as derived from the grammar of Problem 13

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