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

class StringProcessor {
    public:
    static string removevowels(string str){
        
        for(int i=0;i<str.length();i++){
            if (!(str[i]>='a'&& str[i]<='z')||
            (str[i]>+'A' && str[i]<='z')||
            (str[i] == ' ')) {
                return"Invalid input";
                
            }
        }
        string result="";
        
        for (int i=0;i<str.length();i++){
            char ch=str[i];
            
            if(!(ch =='a' || ch =='e' ||ch =="i"||
                 ch =='o' ||  ch=='u' ||
                 ch =='A' || ch =='E' || ch =='I' || 
                 ch =='O' || ch =='U' )){
                     result += ch;
                 }
        }
        return result;
    }
    
};
int main(){
    string str;
    getline(cin,str);
    
    cout << StringProcessor::removeVowels(str);
    return 0;
}