using System;

public class Program

{

    public static void Main(string word)

    {

        string[] v = new string['a', 'e', 'i', 'o', 'u'];

        int n = word.Length;

        char[] s = word.ToCharArray(0, n);

        int ind = -1;

        int indpre = -1;

        char[] result = s;

​

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

        {

          if(ind != -1)

          {

            indpre = ind;

          }

          for (int j = 0; j <= 5; j++)

          {

            if(s[i].ToString() == v[j].ToString())

            {

              ind = i;

              if(indpre != -1)

              {

                result[indpre] = s[ind];

                result[ind] = s[indpre];

              }

            }

          }

        }

        Console.WriteLine(result);

    }

}