Subsequence

import java.util.*;
import java.lang.*;
import java.io.*;
import java.math.*;

/* Name of the class has to be "Main" only if the class is public. */
class Codechef {


  static String str;
  static int max_len=0;
  static int max_sum=0;
  static String res="";
  static int character(char c)
  {
      if(c=='a'||c=='e'||c=='i'||c=='o'||c=='u')
        return 1;
      else
        return 0;
  }
  static void solve(int cur,int prev,int len,int sum,String st) {

       if(cur>=str.length())
       {
           if(max_len<len)
           {
               max_sum=sum;
               max_len=len;
               res=st;
           }
           else if(max_len==len)
           {
               if(max_sum<sum){
                max_sum=sum;
                res=st;
               }
           }
           return;
       }
       if(prev==-1)
       {
           solve(cur+1,cur,len+1,sum+str.charAt(cur)-'a',st+""+str.charAt(cur));
           solve(cur+1,prev,len,sum,st);
       }
       else if(character(str.charAt(prev))!=character(str.charAt(cur)))
       {
           solve(cur+1,cur,len+1,sum+str.charAt(cur)-'a',st+""+str.charAt(cur));
           solve(cur+1,prev,len,sum,st);
       }
       else
            solve(cur+1,prev,len,sum,st);
    }

  public static void main(String[] args) throws java.lang.Exception {
    BufferedReader bf = new BufferedReader(new InputStreamReader(System.in));
    str=bf.readLine();
    solve(0,-1,0,0,"");
    System.out.println(res);
  }
}