// editor1
#include<iostream>
#include<string>
using namespace std;
class stringp {
    public:
    static string removeVowels(string str){
        string result ="";
        for(int i=0; i<str.length();i++){
            char c = str[i];
            if(!(str[i] >='a'&& str[i]<='z') || (str[i]>='A' && str[i] <='Z') || (str[i] ==' ')) {
                return "invalid input";
            }
            if (!(c=='a'||c=='e'||c=='i'||c=="o"||c=='u'||c=='A'||c=='E'||c=='I'||c=='O'||c=='U')) {
                return += c;
            }
        }
        return result;
    }
};

int main(){
    string s;
    getline(cin,s);
    cout<<stringp::removeVowels(s);
    return 0;
}