#include<fstream.h>
#include<string.h>
int n,i,j,k,sol=0;
char v[101][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;
}