using System;

public class Program

{

    public static void Main()

    {

         char[] key = {'a','e','i','o','u'};

        Console.Write("Input your name : ");

        string name = Console.ReadLine();

        for(int i = 0; i<name.Length;i++){

            for(int j = 0; j<key.Length;j++){

                if(key[j]==name[i]){

                    Console.WriteLine(key[j]);

                }

            }

        }

    }

}