#include <iostream>
#include <string>
#include <cctype>
int main(){
    std::string input;
    if(!std::getline(std::cin,input))return 0;
    bool isvalid=true;
    std::string vowels="aeiouAEIOU";
    std::string result="";
    for(char c:input){
        if(!std::isalpha(c)&&!std::isspace(c)){
            isvalid=false;
            break;
        }
    }
if (!isvalid){
    std::cout<<"Invalid input"<<std::endl;
}else{
for (char c:input){
    if(vowels.find(c)==::string::npos){
        result+=c;
    }
}
std::cout<<result<<std::endl;
}}