#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;
    }