#include<stdio.h>
#include<string.h>
#define fin "restante.in"
#define fout "restante.out"
#define L 36001
#define l 26
char v[L][l], aux[l], count, enter[l];
int n, i, j;

void sort_cuv(char s[])
{
 char aux;
  for(int i = 0 ; i<strlen(s) - 1; i++)
   for(int j = i+1; j<strlen(s); j++)
    if( s[i] > s[j])
	{
	  aux = s[i];
	  s[i] = s[j];
	  s[j] = aux;
	}
}
int main(void)
{
 freopen(fin, "r", stdin);
 freopen(fout, "w", stdout);

 scanf("%d", &n);
 gets(enter);
 for( i=1; i<=n; i++)
  {
	gets(v[i]);
	sort_cuv(v[i]);
  }

  for( i=1; i<n; i++)
   for( j=i+1;j<=n; j++)
	if( strcmp(v[i], v[j]) > 0)
	{
	  strcpy(aux, v[i]);
	  strcpy(v[i], v[j]);
	  strcpy(v[j], aux);
	}

  for(i=1; i<n; i++)
   if( strcmp(v[i], v[i+1]) )
	count++;


 printf("%d\n", count);

 fcloseall();
 return 0;

}