Question: Write a regular expression that defines the language over { a,b,c }, consisting of all words that begin and end in a double c, contain

Write a regular expression that defines the language over {a,b,c}, consisting of all words that begin and end in a double c, contain at least one letter between the starting double c and the ending double c, where bs must occur in groups of 2 or more, and each group of bs must be preceded by an a.

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