using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace ConsoleApp69
{
    class Program
    {
        static void Main(string[] args)
        {
            int n = Convert.ToInt32(Console.ReadLine());
            List<int> list = new List<int>();
            List<int> list1 = new List<int>();
            for (int i = 1; i <= n; i++)
            {
                list = Console.ReadLine().Split(',').Select(Int32.Parse).ToList();
                list1.AddRange(list);
            }

            Dictionary<int, int> brojevi = new Dictionary<int, int>();
            brojevi = list1.GroupBy(x => x).OrderByDescending(x => x.Count()).ToDictionary(y => y.Key, y => y.Count());

            Console.WriteLine("\n");

            for(int i = 0; i < 6; i++)
            {
                Console.WriteLine(brojevi.ElementAt(i).Key);
            }

            Console.ReadKey();
        }
    }
}