using System;

public class Program

{

    public static void Main()

    {

        ///Laura Cristina Avalos Karlis 1-e

        Start:

        Console.WriteLine("Intoduce initial value");

        int n1=Convert.ToInt32(Console.ReadLine());

        Console.WriteLine("Intoduce limit");

        int n2=Convert.ToInt32(Console.ReadLine());

        Console.WriteLine("Intoduce increment");

        int inc=Convert.ToInt32(Console.ReadLine());

        if(n1<n2 && inc>0 && inc<= (n2-n1))

        {

            for(int i=n1; i<=n2; i+=inc)

            {

                Console.Write("{0} ,",i);

            }

        }

        else

        {

            Console.WriteLine("Please introduce the values again.");

            goto Start;

        }

    }

}