public static void main ( String [ ] args ) {
  String [ ] data = {
    "vaporeon" , "jolteon" , "flareon" , "espeon" , "umbreon" , "leafeon" , "glaceon" , "sylveon" };
    Scanner sc = new Scanner ( System . in ) ;
    int n = sc . nextInt ( ) ;
    String str = sc . next ( ) ;
    char [ ] c = str . toCharArray ( ) ;
    for ( int i = 0 ;
    i < data . length ;
    i ++ ) {
      if ( n != data [ i ] . length ( ) ) {
        continue ;
      }
      int count = 0 ;
      char [ ] ch = data [ i ] . toCharArray ( ) ;
      for ( int j = 0 ;
      j < c . length ;
      j ++ ) {
        if ( c [ j ] == data [ i ] . charAt ( j ) || c [ j ] == '.' ) {
          count ++ ;
        }
        else {
          break ;
        }
      }
      if ( count == n ) {
        System . out . println ( data [ i ] ) ;
      }
    }
  }
  
public static void main ( String [ ] args ) { String [ ] data = { " vaporeon " , " jolteon " , " flareon " , " espeon " , " umbreon " , " leafeon " , " glaceon " , " sylveon " } ; Scanner sc = new Scanner ( System . in ) ; int n = sc . nextInt ( ) ; String str = sc . next ( ) ; char [ ] c = str . toCharArray ( ) ; for ( int i = 0 ; i < data . length ; i ++ ) { if ( n != data [ i ] . length ( ) ) { continue ; } int count = 0 ; char [ ] ch = data [ i ] . toCharArray ( ) ; for ( int j = 0 ; j < c . length ; j ++ ) { if ( c [ j ] == data [ i ] . charAt ( j ) || c [ j ] == ' . ' ) { count ++ ; } else { break ; } } if ( count == n ) { System . out . println ( data [ i ] ) ; } } }
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