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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def uniqued(iterable):
 """Return unique list of ``iterable`` items preserving order. ['s', 'p', 'a', 'm', 'e', 'g'] """

    seen = set()
    return [item for item in iterable if item not in seen and not seen.add(item)]