using System;

public class Program

{

    public static void Main()

    {

        Console.WriteLine("put in an animal.");

        string animal = Console.ReadLine();

        while (animal == "dog") 

        {

        Console.WriteLine("dog");

        }

        int x = 8;

        do

        {

        Console.WriteLine(x);

        }while(x==9);

        for( int i = 0; i<10; i++)

        {

        Console.WriteLine( i );

        } 

        }

}