using System;

public class Program

{

    public static void Main()

    {   

        for(int i = 10;i>20;i+=2)

        {

            Console.WriteLine("i={0}",i);

        }

        for(int j = 20;j>1;j= 3)

        {

            Console.WriteLine("j={0}",j);

        }

    }

}