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#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++)
for(int j=i+1;j<=n;j++)
if(strcmp(s[i],s[j])>0)
swap(s[i],s[j]);
strcpy(s[0],"1");
strcpy(s[n+1],"2");
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;
}