In a pushdown automaton P = (Q, E, T, 8, qo, F), a transition of the form, %3D a, X Y p. b. where p, q, e Q, a e Eulɛ}, and X, Ye rU (E}, represents (q. Y) e 8(p, a, X) Consider the following pushdown automaton over the input alphabet Ela, b] and stack alphabet r = (#, A). %3D a, ɛ A b, A E, ɛ# 90 & A A 92 E, E E Start 91

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