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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 check(self):
 """ Check that this table is complete, that is, every character of this table can be followed by a new character. :return: True if the table is complete, False otherwise. """

        for character, followers in self.items():
            for follower in followers:
                if follower not in self:
                    return False
        return True