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Write a program that tries to solve the Post Correspondence problem according to the following algorithm. - In the

first stage of search, use a breadth-first search through the state space detailed in problem 4 from the written component until the queue of frontier states has reached a specified maximum. You should use a HashMap or Dictionary over strings to eliminate repeated states. - In the second stage of search, use iterative deepening starting from the frontier created in the first stage, until a specified limit has been reached.

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