Question: please help me i have only 15min 4. (a) Is ababa D DOUBLE regular? Is it context-free? (If needed, I prefer seeing a CFG rather

please help me i have only 15min

4. (a) Is ababa D DOUBLE regular? Is it context-free? (If needed, I prefer seeing a CFG rather than a PDA.) It is probably a good idea to first try to describe the language. (b) Is abab DOUBLE regular? Is it context-free? (If needed, I prefer seeing a CFG rather than a PDA.)

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