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Given the regular expressions: r = (a|bc)*, r2 = (ab)*|(bc)*|(ca)*, and r3 = a|bc)* (a) (15 points) Give an English description of the language defined

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Given the regular expressions: r = (a|bc)*, r2 = (ab)*|(bc)*|(ca)*, and r3 = a|bc)* (a) (15 points) Give an English description of the language defined by each of the three regular expressions r1, r2 and r3 (b) (15 points) Write the language defined by each of the regular expressions ri, r2 and r3 in set notation

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