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def make_markdown_table(array):
    nl = "\n"

    markdown = nl
    markdown += f"| {' | '.join(array[0])} |"

    markdown += nl
    markdown += f"| {' | '.join(['---']*len(array[0]))} |"

    markdown += nl
    for entry in array[1:]:
        markdown += f"| {' | '.join(entry)} |{nl}"

    return markdown


def main():
    relative_range = []
    for rel in range(129):
        relative_range.append(rel)
    relative_range.sort(reverse=True)

    hex_list = [['Decimal', 'Hex', 'Relative']]
    relative = ''

    for decimal in range(256):
        if decimal > 127:
            relative = relative_range[decimal-128]
        hex_list.append(
            [
                str(decimal),
                str(hex(decimal)).replace('0x', ''),
                '-' + str(relative)
            ]
        )

    print(make_markdown_table(hex_list))


if __name__ == '__main__':
    main()