#include <fstream>
#include <string>
#include <algorithm>
using namespace std;
ifstream cin("restante.in");
ofstream cout("restante.out");

string s,S[36000];
int n,viz[36013],i,nr(0),j;
int main()
{
  cin>>n;
  getline(cin,s);
  for (i=0;i<n;++i) getline(cin,S[i]), sort(S[i].begin(),S[i].end());        
  for (i=0;i<n;++i)
     if (viz[i]==0){
                    s=S[i];
                    for (j=i+1;j<n;++j)
                        if (S[j]==S[i]){
                                        nr+=2;
                                        viz[j]=1;
                                        break;
                                        }
                    }
  cout<<n-nr;    
return 0;
}