#include <iostream>
#include <vector>
#include <stdlib.h>
#include <stdio.h>
using namespace std;

int main () {

 vector<int> v;
 int N;
 
 while (scanf("%d",&N) != EOF) {
 	int x;	
	v.clear();
	
        
	for (int i = 0; i < N; i++) {
            int mask = 0;
	   cin >> x;
	int num = x;
	while (num != 0) {
            switch(num%10) {
                case 1 : mask = mask | 1; break;
                case 2 : mask = mask | 2; break;
                case 3 : mask = mask | 4; break;
                case 4 : mask = mask | 8; break;
                case 5 : mask = mask | 16; break;
                case 6 : mask = mask | 32; break;
                case 7 : mask = mask | 64; break;
                case 8 : mask = mask | 128; break;
                case 9 : mask = mask | 256; break;
            }
	   num/=10;				
	}
        //cout << mask<<endl;
	bool found = false;
        if (v.size()==0) {
            v.push_back(mask);
            continue;
        }
        for (int j = 0; j < v.size(); j++) {
            if (v[j] == mask) {
                found = true;
                break;
            }   
        }
        if (!found) {
            v.push_back(mask);
        }
        
        
	}	
    	   
	
        cout << v.size() << endl;
        

 } 
	


 return 0;
}