Question: 4. (a) Write a grammar for the following language consisting of strings that have n copies of the letter ' a ' followed by one

4. (a) Write a grammar for the following language consisting of

4. (a) Write a grammar for the following 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. Examples of such strings are abb, aabbb, etc, but a,ab, ba, and aaabb are not. (b) Draw parse trees for the sentences abb and aabbb in Problem 4

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