#include<iostream>
#include<string>
int main(){
    string str;
    getline(cin,str);
    for(char c:str){
        if(!isalpha(c)&& c!=' '){
            cout<<"Invalid input";
            return 0;
        }
    }
    for(char c:str){
        if(!(c=='a'||c=='e'||c=='i'||c=='o'||c=='u'||c=='A'||c=='E'||c=='I'||c=='O'||c=='U')){
            cout<<c;
        }
    }
    return result;
}