b. {w ∈ {0, 1}* |w contains ‘111’ as a substring and does not contain ‘00’ as a substring}
c. {w ∈ {a, b, c}* | in w the number of ‘a’s modulo 2 is equal to the number of ‘b's modulo 3}
b. {w ∈ {0, 1}* |w contains ‘111’ as a substring and does not contain ‘00’ as a substring}
c. {w ∈ {a, b, c}* | in w the number of ‘a’s modulo 2 is equal to the number of ‘b's modulo 3}
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