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Give unambiguous CFGs for the following languages. a. wl in every prefix of w the number of a's is at least the number of b's)
Give unambiguous CFGs for the following languages. a. wl in every prefix of w the number of a's is at least the number of b's) b. wl the number of a's and the number of b's in w are equal c. w the number of a's is at least the number of b's in w)
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