#include<bits/stdc++.h>
using namespace std;
bool isVowel(char c) {
    c=tolower(c);
    return c=='a' || c=='e' || c=='i' || c=='o' || c =='u'
}
int main(){
    string str;
    getline(cin, str);
    for (char c : str) {
        if (!isalpha(c) || c == ' ')) {
            cout << "Invalid input";
            return 0;
        }
    }
    string result;
    for (char c: str) {
        if(!isVowel(c))
        result.push_back(c);
    }
    cout<<result;
    return 0;
}