
6) Suppose we define a double pushdown automaton to have 2 stacks by having transi- tions of the form (g, a, Ai, A2) . (p. Bi , B2), ) ); Ai, A2 є Ги {e) are the stack syinbols popped from stack 1 and stack 2, resp. and B.. B2 є「Uc) are the stack symbols pushed onto stack 1 and stack 2, resp. Briefly explain your idea, then draw the diagram
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