#include<iostream>
#include<string>
using namespace std ;
int main()
{
    string str ;
    getline(cin,str);
    string result="";
    string vowles="aeiouAEIOU";
    for(char ch: str)
    {
        if (!isalpha(ch) && ch!= '')
        {
            cout<<"Invalid input";
            return 0;
        }
        if(vowles,find(ch) == string::npos)
        {
            result+=ch;
        }
    }
    cout<<result;
    return 0;
}