def concat(list_a: list, list_b: list) -> list:
    """
    Concatenates two lists together into a new list

    Example:
       >>> concat([1, 2, 3], [4, 5, 6])
       ... [1, 2, 3, 4, 5 6]


    :param list_a: First list to concatenate
    :param list_b: Second list to concatenate
    :return: Concatenated list
    """
    result = list_a + list_b
    return result