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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 convert_to_strings(self, sequences, sizes=None):
 """Given a list of numeric sequences, returns the corresponding strings"""

        strings = []
        for x in xrange(len(sequences)):
            seq_len = sizes[x] if sizes is not None else len(sequences[x])
            string = self._convert_to_string(sequences[x], seq_len)
            strings.append(string)
        return strings