def iterate_expXdrift_linearYdrift(iter_number = 20, *args, **kwargs):
    return dm_iterate_helper(expXdrift_linearYdrift_factory,
                             iter_number,
                             *args, **kwargs)
def iterate_expQuadraticYdrift(iter_number = 20, *args, **kwargs):
    return dm_iterate_helper(expQuadratic_factory, iter_number, *args, **kwargs)
def iterate_G3Ydrift(iter_number = 20, *args, **kwargs):
    return dm_iterate_helper(G3_factory, iter_number, *args, **kwargs)
def iterate_allLinear(iter_number = 20, *args, **kwargs):
    return dm_iterate_helper(allLinear_factory, iter_number, *args, **kwargs)