#include <iostream>
#include <string>
using namespace std;

int main() {
    string str;
    getline(cin,str);
    for (char ch:str){
        if (!isalpha(ch) && ch != ''){
            cout << "Invalid input";
            return 0;
        }
    }
    string result= "";
    for (char ch:str) {
        char lower =tolower(ch);
        if (lower != 'a' && lower != 'e' && lower != 'i' && lower != 'o' && lower != 'u'){
            result +=ch;
        }
    }
    cout << result;
    return 0;
}