def _do_magick_convert_enlighten_border(width, height):
    """
    Build the command line arguments to enlighten the border in four regions.

    :param int width: The width of the image.
    :param int height: The height of the image.

    :return: Command line arguments for imagemagicks’ `convert`.
    :rtype: list
    """
    border = int(round(((width + height) / 2) * 0.05))

    # top
    # right
    # bottom
    # left
    r = ('{}x{}'.format(width - border, border),
         '{}x{}+{}'.format(border, height - border, width - border),
         '{}x{}+{}+{}'.format(width - border, border, border, height - border),
         '{}x{}+{}+{}'.format(border, height - border, 0, border))

    out = []
    for region in r:
        out += ['-region', region, '-level', '0%,30%']

    return out