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4. Construct a pushdown automaton for each of the following langauges – by giving its 6-tuple formal defintion and brief/prec

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{ w E {a, b}* Iw has twice as many as and bs} b) (1) Can - (1 ,دره SC S (۹a, A) - 2 . A] } C۹ ,(13 ۹, c) = ۵( ۹ 13ی 3 ہے ۔

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