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