#include <vector>
#include <cstdio>
#include <iostream>
#include <algorithm>
using namespace std;

string v[36005];
int i,n,contor;
freopen("restante.in","r", stdin);
freopen("restante.out","w", stdout);

int main()
{
    scanf("%d",&n);
    for(i=0; i<n; i++) {
        cin>>v[i];
        sort(v[i].begin(),v[i].end());
    }
    sort(v,v+n);
    for(i=1; i<n; i++) {
        if(v[i]!=v[i-1]) contor++;
        else
        {
            while(v[i]==v[i-1]) i++;
        }

    }
    if(v[n-1]!=v[n-2]) contor++;
    printf("%d",contor);
    return 0;
}