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