import java.util.Scanner;

/**
   Reads a string and prints out all vowels contained in that string.
   Vowels are A E I O U a e i o u.

   Input: the value of s, a string
   Output: a string containing all the vowels in s,
      in the order in which they appear in s
*/
public class GetVowels
{
   public static void main(String[] args)
   {
      String r = "";

      Scanner in = new Scanner(System.in);
      String s = in.nextLine();

      String vowels = "aeiouAEIOU";
      for(int i = 0; i < s.length(); i++)
      {
         if(vowels.indexOf(s.charAt(i)) != -1){r += s.charAt(i);}
      }

      System.out.println(r);
   }
}