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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def exists_secondary_combined_list(curriculum_abbr, course_number, primary_section_id, quarter, year):
 """ Return True if a combined mailman list exists for all the secondary course sections in the given quarter and year """

    return exists(get_secondary_combined_list_name(curriculum_abbr,
                                                   course_number,
                                                   primary_section_id,
                                                   quarter,
                                                   year))