#include<fstream.h>   
#include<string.h>   
int n,i,j,k,sol=0;   
char v[36010][17],aux,a[17];
int main()   
{   
ifstream f("restante.in");   
ofstream g("restante.out");   
  
f>>n;f.get();   
  
for(i=1;i<=n;i++)   
 {f.get(v[i],16);   
  f.get();   
  
   for(j=0;j<strlen(v[i])-1;j++)   
    for(k=j+1;k<strlen(v[i]);k++)   
      if(v[i][j]>v[i][k]) { aux=v[i][j]; v[i][j]=v[i][k]; v[i][k]=aux;}   
 }   
  
for(i=1;i<n;i++)   
 for(j=i+1;j<=n;j++)   
  if(strcmp(v[i],v[j])>0) { strcpy(a,v[i]);   
                strcpy(v[i],v[j]);   
                strcpy(v[j],a);   
              }   
for(i=1;i<=n;i++)   
 if(strcmp(v[i],v[i+1])!=0) sol++;   
     else while (strcmp(v[i],v[i+1])==0) i++;   
g<<sol;   
f.close();   
g.close();   
return 0;   
}