Question: 1. Exhibit a string over the alphabet {a,b} that does not belong to (aUba)*a*b*. Justify your answer. (No formal proof is needed.)

1. Exhibit a string over the alphabet {a,b} that does not

1. Exhibit a string over the alphabet {a,b} that does not belong to (aUba)*a*b*. Justify your answer. (No formal proof is needed.)

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