#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;
}