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a) Describe the language generated by the following context free grammar (CFG): S ? SS S ? ZZZ Z ? bZ Z ? Zb Z

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a) Describe the language generated by the following context free grammar (CFG):

S ? SS S ? ZZZ Z ? bZ Z ? Zb Z ? a

b) Let ? = {a, b}. Find a CFG for the language L of all words over ? that have different first and last letters. (L = {ab, ba, aab, abb, baa, bba,.}.)

Q3) a) Describe the language generated by the following context free grammar (CFG): 5 Points z- a b) Let (a, b). Find a CFG for the language L of all words over ? that have different first and last letters. (L fab, ba, aab, abb, baa, bba,..) 5 Points

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