public static void main ( String [ ] args ) {
  Scanner s = new Scanner ( System . in ) ;
  int n = s . nextInt ( ) ;
  s . nextLine ( ) ;
  String s2 = s . nextLine ( ) ;
  String [ ] s1 = s2 . split ( " " ) ;
  ArrayList < String > a = new ArrayList < > ( ) ;
  for ( int i = 0 ;
  i < n ;
  i ++ ) {
    String s3 = "" ;
    char [ ] ch = s1 [ i ] . toCharArray ( ) ;
    Arrays . sort ( ch ) ;
    for ( int j = 0 ;
    j < s1 [ i ] . length ( ) ;
    j ++ ) {
      char c = ch [ j ] ;
      if ( s3 . indexOf ( c ) < 0 ) s3 = s3 + c ;
    }
    a . add ( s3 ) ;
  }
  HashSet < String > h = new HashSet < > ( a ) ;
  System . out . println ( h . size ( ) ) ;
}

public static void main ( String [ ] args ) { Scanner s = new Scanner ( System . in ) ; int n = s . nextInt ( ) ; s . nextLine ( ) ; String s2 = s . nextLine ( ) ; String [ ] s1 = s2 . split ( " ▁ " ) ; ArrayList < String > a = new ArrayList < > ( ) ; for ( int i = 0 ; i < n ; i ++ ) { String s3 = " " ; char [ ] ch = s1 [ i ] . toCharArray ( ) ; Arrays . sort ( ch ) ; for ( int j = 0 ; j < s1 [ i ] . length ( ) ; j ++ ) { char c = ch [ j ] ; if ( s3 . indexOf ( c ) < 0 ) s3 = s3 + c ; } a . add ( s3 ) ; } HashSet < String > h = new HashSet < > ( a ) ; System . out . println ( h . size ( ) ) ; }
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