def gen_ticks(bound: int):
    """Generate increasing ticks from a reversed axis.

    Parameters
    ----------
    bound : `int`
        The highest value, tick for this is 0

    Returns
    -------
    `List[int]`
        Array of tick positions
    """
    res = [bound]
    while bound >= 0:
        bound -= 7
        if bound > 0:
            res.append(bound)
    return res