Question: construct nondeterministic Turing machine whose language is the set of strings over {a, b} that contains a substring u satisfying the following two properties: i)

construct nondeterministic Turing machine whose language is the set of strings over {a, b} that contains a substring u satisfying the following two properties:

i) length(u) ? 2

ii) u contains the same number of a's and b's

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