#include<iostream>
#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;
    }
    count<<result;
    return 0;
}