#include<iostream>
using namespace std;
int main(){
    string str;
    getline(cin,str);
    for(int i=0;i<str.length();i++){
        if(!isalpha(str[i])&&str[i]!=' '){
            cout<<"Invalid input";
            return 0;
        }
        if(str[i]!='a'&&str[i]!='e'&&str[i]!='i'&&str[i]!='o'&&str[i]!='u'&&str[i]!='e'&&str[i]!='A'&&str[i]!='E'&&str[i]!='I'&&str[i]!='O'&&str[i]!='U'){
            cout<<str[i];
    }
}