def make_comma_list_a_list(elements_to_rocess):
    """Process a list with commas to simple list.

    For example:
    ['elem1','elem2,elem3'] => ['elem1', 'elem2', 'elem3']

    :param elements_to_rocess: list to process
    :return: processed list with elemnts separated
    """
    output_list = []
    for element in elements_to_rocess:
        output_list.extend(element.split(','))
    return list(set(output_list))
