#include <stdio.h>
#include <string.h>

#define Nmax 36004
#define Lmax 17

int N,nr,i;
char s[Nmax][Lmax];


void citire()
{
 freopen("restante.in","r",stdin);
 scanf("%d",&N);
 for (i=1;i<=N;++i)
	scanf("%s\n",&s[i]);
 fclose(stdin);
}

void bulansort(int ind)
{
 int ok=1,L,i;
 char aux;
 L=strlen(s[ind]);
 while (ok)
	{
	 ok=0;
	 for (i=0;i<L-1;++i)
		if (s[ind][i]>s[ind][i+1])
			{
			 ok=1;
			 aux=s[ind][i];
			 s[ind][i]=s[ind][i+1];
			 s[ind][i+1]=aux;
			}
	}
}

void qsort(int st,int dr)
{
 int i=st,j=dr;
 char m[Lmax],aux[Lmax];
 memcpy(m,s[(st+dr)>>1],sizeof(s[(st+dr)>>1]));
 while (i<=j)
	{
	 while (strcmp(m,s[i])>0) ++i;
	 while (strcmp(s[j],m)>0) --j;
	 if (i<=j)
		{
		 memcpy(aux,s[i],sizeof(s[i]));
		 memcpy(s[i],s[j],sizeof(s[j]));
		 memcpy(s[j],aux,sizeof(aux));
		 ++i,--j;
		}
	}
 if (i<dr) qsort(i,dr);
 if (st<j) qsort(st,j);
}

int main()
{
 citire();
 for (i=1;i<=N;++i)
	bulansort(i);
 qsort(1,N);
 i=1;
 while (i<=N)
       {
	if (strcmp(s[i],s[i+1])==0)
		{
		 while (strcmp(s[i],s[i+1])==0)
			++i;
		}
	   else ++nr;
	++i;
       }
 freopen("restante.out","w",stdout);
 printf("%d",nr);
 fclose(stdout);
 return 0;
}