def drn_d_56(pretrained=False, **kwargs):
    model = DRN(Bottleneck, [1, 1, 3, 4, 6, 3, 2, 2], arch='D', **kwargs)
    if pretrained:
        model.load_state_dict(model_zoo.load_url(model_urls['drn-d-56']))
    return model