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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 visit_Set(self, pattern):
 """ Set have unordered values. """

        if len(pattern.elts) > MAX_UNORDERED_LENGTH:
            raise DamnTooLongPattern("Pattern for Set is too long")
        return (isinstance(self.node, Set) and
                any(self.check_list(self.node.elts, pattern_elts)
                    for pattern_elts in permutations(pattern.elts)))