"""
 *
 * Author:  Juarez Paulino(coderemite)
 * Email: juarez.paulino@gmail.com
 *
 """
import re
a=['vaporeon','jolteon','flareon','espeon','umbreon','leafeon','glaceon','sylveon']
b='^'+[*open(0)][1][:-1]+'$'
for x in a:
  if re.match(b,x):
    print(x)
    break
