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4. If a regular expression for the language over the alphabet {a, b} with no string containing the substring bb is (a+ba)* (A+b), then what

4. If a regular expression for the language over the alphabet {a, b} with no string containing the substring bb is (a+ba)* (A+b), then what is the regular expression for the language over the same alphabet with no string containing the substring bbb or bbbb? (3 points)

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