#include <iostream>
using namespace std;

int main(){
    string str,result="";
    getline(cin,str);
    for(char c:str){
        if(!isalpha(c) && c !=''){
            cout<<"invalid input";
            return 0;
        }
        if(string("aeiouAEIOU").find(c)== string::npos)
             result+=c;
    }
    cout<<result;
    return 0;
    
}