#include <iostream>
#include <cstring>
#include <conio.h>
using namespace std;

int consoana(char c)
{
    char voc_sep[]="aeiouAEIOU ,.", *p;
    p=strchr(voc_sep,c);
    if(p==NULL)return 1;
    return 0;
}
int cuvant(char s[])
{
     int n,i;
    n=strlen(s);
    for(i=2;i<n;i++)
      if(consoana(s[i])+consoana(s[i-1])+consoana(s[i-2])==3 || consoana(s[i])+consoana(s[i-1])+consoana(s[i-2])==0)
        return 1;
    return 0;
}
int main ()
{
    int i,n,ok=0;
    char s[500], sep[]=" ,.", *p;
    cin.get(s,500);
    p=strtok(s,sep);
    while(p!=NULL)
    {
        if(cuvant(p)==1){ok=1;cout<<p<<endl;}
            p=strtok(NULL,sep);
    }
    if(ok==0)
        cout<<"Nu exista";
    return 0;
}