L3 is the language L3={a"bc")*d* | n>1, k21} over the alphabet E={a,b,c,d}. a) Build a one-stack Push Down Automata (PDA) to accept the language L3. Please explain your design shortly and draw the PDA. b) Build a multi-stack Push Down Automata (PDA) (for example with two stacks) to accept L3. Please explain your design shortly and draw the PDA.

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