#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<<results;
    return 0;
}