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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 _setup(self, word) -> List[str]: """ Prepares a word for syllable processing. If the word starts with a prefix, process it separately. :param word: :return: """

        if len(word) == 1:
            return [word]
        for prefix in self.constants.PREFIXES:
            if word.startswith(prefix):
                (first, rest) = string_utils.split_on(word, prefix)
                if self._contains_vowels(rest):
                    return string_utils.remove_blank_spaces(
                        self._process(first) + self._process(rest))
                # a word like pror can happen from ellision
                return string_utils.remove_blank_spaces(self._process(word))
        if word in self.constants.UI_EXCEPTIONS.keys():
            return self.constants.UI_EXCEPTIONS[word]
        return string_utils.remove_blank_spaces(self._process(word))