Question: (i) Build a PM that takes in any string of a's and b's and leaves in its STORE the complement string that has the a's

(i) Build a PM that takes in any string of a's and b's and leaves in its STORE the complement string that has the a's and b's switched.
(ii) Build a PM that takes in any string of a's and b's and exchanges the first and last letters and then accepts.

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