1. you may take itemA
    2. for every 3 models, you may exchange itemB with itemC
    3. each model may take 2 of itemD
    4. each model may take one of either itemE, itemF or itemG

for index, option in enumerate(self.options):
        output = "{}.".format(index+1)
        if '-' in option:
            sub_option, no_models = option.split('-')
            no_models = int(no_models)
            print(sub_option)
            print(no_models)
            output += "For every {} models ".format(no_models)
            if '/' in sub_option:
                temp_str, temp_options, points_list = exchange_option(sub_option)

            else:
                temp_str, temp_options, points_list = standard_option(sub_option)

            index_points.append(points_list)
            temp_options.append(no_models)
            index_options.append(temp_options)

        else:
            if '/' in option:
                temp_str, temp_options, points_list = exchange_option(option)
            else:
                temp_str, temp_options, points_list = standard_option(option)

            index_points.append(points_list)
            index_options.append(temp_options)

        output += temp_str