#include<iostream>
#include<string>
using namespace std;
int main()
{
    strings str;
    getline(cin,str);
    string result="";
    string vowels="aeiouAEIOU";
    for(char ch:str)
    {
        if(!isalpha(ch) && ch!=' ')
        {cout<<"Invalid input";
        return 0;
        }
    }
    if(*vowels.find(ch)==stings::npos)
    {
        result+=ch;
    }
    cout<<result;
    return 0;
}