#include <fstream>
#include <cstring>
#include <algorithm>
using namespace std;
ifstream cin("restante.in");
ofstream cout("restante.out");
struct Cuvant {
    char s[18];
};
Cuvant v[36005];
char s[18], aux;
int n, i, j, k, len, nr, identic;
bool cmp(Cuvant a, Cuvant b)
{
    return strcmp(a.s, b.s) < 0;
}
int main()
{
    cin>>n;
    for(i=1;i<=n;i++)
    {
        cin>>s;
        len=strlen(s);
        for(j=0;j<len-1;j++)
            for(k=j+1;k<len;k++)
                if(s[j]>s[k])
                {
                    aux=s[j];
                    s[j]=s[k];
                    s[k]=aux;
                }
        strcpy(v[i].s,s);
    }
    sort(v+1, v+n+1, cmp);
    nr=0;
    for(i=1;i<=n;i++)
    {
        identic=0;
        if(i>1 && strcmp(v[i].s,v[i-1].s)==0)
            identic=1;
        if(i<n && strcmp(v[i].s,v[i+1].s)==0)
            identic=1;
        if(identic==0)
            nr++;
    }
    cout<<nr<<'\n';
    return 0;
}