#include<fstream>
#include<algorithm>
#include<vector>
#include<cstring>
//#include<iostream>
using namespace std;
ifstream cin("restante.in");
ofstream cout("restante.out");
char s[36005][20],s1[30];
int main() {
    int n;
    cin>>n;
    for(int i=1;i<=n;i++)
    {
        cin>>s1;
        sort(s1,s1+strlen(s1));
        strcpy(s[i],s1);
    }
    int cnt=0;
for(int i=1;i<=n;i++)
    if(strcmp(s[i-1],s[i])!=0&&strcmp(s[i],s[i+1])!=0)
        cnt++;
cout<<cnt;
}