Question: Construct a pushdown automata that recognizes { w | w is an element of {a, b, c, d}* such that the number of a's in

Construct a pushdown automata that recognizes { w | w is an element of {a, b, c, d}* such that the number of a's in w + the number of b's in w = the number of c's in w + the number of d's in w }

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