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