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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 _transpose(cls, char):
 """Convert unicode char to something similar to it."""

        try:
            loc = ord(char) - 65
            if loc < 0 or loc > 56:
                return char
            return cls.UNICODE_MAP[loc]
        except UnicodeDecodeError:
            return char