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