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Build NFAs for the following two languages. a) The set of strings over alphabet fa, b, c such that the last symbol in the string

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Build NFAs for the following two languages. a) The set of strings over alphabet fa, b, c such that the last symbol in the string has appeared before. b) The set of strings over alphabet fa, b, c) such that the last symbol in the string has not appeared before. You can assume that neither of these two languages contain e in them

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