Question: Construct a NFA whose language is the set of strings over {a, b, c, d} which do not contain all four symbols. Of course, by

Construct a NFA whose language is the set of strings over {a, b, c, d} which do not contain all four symbols. Of course, by keeping track of which symbols we have seen so far, we can construct a DFA for this language using 2^4 = 16 states. Your solution should have at most 8 states, which will force you to exploit nondeterminism

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