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3. Prove that the following languages are not context-free. (a) L = {afncn | n 0} (b) L = {abi | (c) L3 =

3. Prove that the following languages are not context-free. (a) L = {afncn | n  0} (b) L = {abi | (c) L3 =

3. Prove that the following languages are not context-free. (a) L = {afncn | n 0} (b) L = {abi | (c) L3 = {abck | i < j and j = k} {ab | j = ki for some positive integer k}. j

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