#include<iostream>
#include<string>
using namespace std;
int main()
{
  string str;
  getline(cin,str);
  string result="";
  string vowels="aeiouAEIOU";
  for(char ch:str){
      if(!isalpha(ch) && ch!=''){
          cout<<"Invalid input";
          return 0;
      }
      if(vowels.find(ch)==string::npos){
          result+=ch;
      }
  }
  cout<<result;
  return 0;
}