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#include <bits/stdc++.h>
using namespace std;
ifstream fin("restante.in");
ofstream fout("restante.out");
string a[36001];
int n;
void Citire()
{
int i;
fin>>n;
for(i=0;i<n;i++)
{
fin>>a[i];
sort(a[i].begin(),a[i].end());
}
}
void Rezolvare()
{
int i,cnt=0;
sort(a,a+n);
a[n] ="";
if(a[0]!=a[1]) cnt=1;;
for(i=1;i<n;i++)
if(a[i]!=a[i-1]&&a[i]!=a[i+1])
cnt++;
fout<<cnt<<"\n";
fout.close();
}
int main()
{
Citire();
Rezolvare();
return 0;
}