<SYSTEM_TASK:>
Solve the following problem using Python, implementing the functions described below, one line at a time
<END_TASK>
<USER_TASK:>
Description:
 def normalizeGlyphOrder(value):
 """ Normalizes glyph order. ** **value** must be a ``tuple`` or ``list``. * **value** items must normalize as glyph names with :func:`normalizeGlyphName`. * **value** must not repeat glyph names. * Returned value will be a ``tuple`` of unencoded ``unicode`` strings. """

    if not isinstance(value, (tuple, list)):
        raise TypeError("Glyph order must be a list, not %s."
                        % type(value).__name__)
    for v in value:
        normalizeGlyphName(v)
    duplicates = sorted(v for v, count in Counter(value).items() if count > 1)
    if len(duplicates) != 0:
        raise ValueError("Duplicate glyph names are not allowed. Glyph "
                         "name(s) '%s' are duplicate." % ", ".join(duplicates))
    return tuple([unicode(v) for v in value])