using System;

using System.Linq;

public class Program

{

    public static void Main()

    {

        Console.WriteLine("Hello World");

        var testData1 = new string[]

        {

            "2-4,6-8",

            "2-3,4-5",

            "5-7,7-9",

            "2-8,3-7",

            "6-6,4-6",

            "2-6,4-8"

        };

        foreach (var item in testData1)

        {

            var pairs = item.Split(',');

            var pairsInt = pairs.Select(x=>x.Split('-').Select(y=> Convert.ToInt32(y)).ToArray()).OrderBy(z=>z[0]);

            foreach(var pair in pairsInt)

            {

                Console.WriteLine($"{pair[0]}, {pair[1]}");

            }

        }

    }

}