#include<isotream>
#include<string>
#include<cctype>
using namespace std;

int main(){
    string str;
    getline(cin,str);
    
    for(char ch : str){
        if(isalpha(ch) && ch != ' '){
            cout<<"Invalid input";
            return 0;
        }
    }
    
    string result = "";
    for(char ch : str){
        char lower = tolower(ch);
        if(lower != 'a' && lower !='e' && lower !='i' && lower !='o' && lower !='u')
        {
            result += ch;
        }
    }
    
    cout<<result;
    return 0;
}