def METHOD_NAME(arg: str):
    properties = sorted(arg.strip().split())
    valid_values = {"Autograd", "TorchScript"}
    if any(val not in valid_values for val in properties):
        raise ValueError(
            "One or more property values are not valid. "
            f"The valid values are {valid_values}. "
            f"Given value: '{arg}'"
        )
    return ", ".join(sorted(properties))