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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 rules(self, word):
 """ Function to tokenize input string and return output of str with ortho rules applied. Parameters word : str The input string to be tokenized. Returns ------- result : str Result of the orthography rules applied to the input str. """

        return self._rules.apply(word) if self._rules else word