#include<stdio.h>
#include<string.h>
#include<algorithm>
using namespace std;
FILE*f=fopen("restante.in","r");
FILE*g=fopen("restante.out","w");
char ok,a[36001][20];
int n,i,x,sol,P[36001];
int cmp(int i, int j) {
	return strcmp(a[i],a[j]) < 0;
}
int main() {
	fscanf(f,"%d\n",&n);
	for(i=1;i<=n;++i){
		fscanf(f,"%s\n",a[i]);
		x=strlen(a[i]);
		sort(a[i],a[i]+x);
		P[i] = i;
	}
	
	sort(P+1, P+n+1, cmp);
	sol=n;
	for(i=2;i<=n;++i){
		ok=0;
		while(strcmp(a[P[i]],a[P[i-1]])==0){
			++i;
			sol--;
			ok=1;
		}
		if (ok)
			sol--;
	}
	fprintf(g,"%d",sol);
	
	fclose(g);
	fclose(f);
	return 0;
}