#include <bits/stdc++.h>
using namespace std;
string s, str[6] = {"jolt", "flar", "umbr", "leaf", "glac", "sylv"};
int main() {
  int n, k = 0, i, j = 0;
  cin >> n;
  cin >> s;
  if (n == 6) {
    cout << "espeon";
    return 0;
  }
  if (n == 8) {
    cout << "vaporeon";
    return 0;
  }
  for (i = 0; i < 4; i++)
    if (s[i] != '.' && s[i] != str[j][i]) {
      j++;
      i = 0;
    }
  cout << str[j] << "eon";
  return 0;
}
