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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 _parse(coord, _match=_regex.match):
 """Return match groups from single sheet coordinate. ('A', '1', None, None) ((None, None, 'A', None), (None, None, None, '1')) Traceback (most recent call last):
 ValueError: spam """

        try:
            return _match(coord).groups()
        except AttributeError:
            raise ValueError(coord)