#include<iostream>
using namespace std;
#include<algorithm>
#include<string.h>
#include<fstream>
char s[36001][17];
int v[36005],x;
int i,n;
int cmp(int q,int w)
{
    return strcmp(s[q],s[w])<0;
}
int main()
{
    ifstream f("restante.in");
    ofstream g("restante.out");
    f>>n;
    for(i=1;i<=n;i++)
    {
        f>>s[i];
        v[i]=i;
        sort(s[i],s[i]+strlen(s[i]));
    }
    sort(v+1,v+n+1,cmp);
        for(i=1;i<=n;i++)
            if((strcmp(s[v[i]],s[v[i+1]])!=0)&&(strcmp(s[v[i]],s[v[i-1]])!=0))
                x++;
                g<<x;

}