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#include <fstream>
#include <cstring>
using namespace std;
ifstream cin("restante.in");
ofstream cout("restante.out");
char v[36005][18], s[18], aux[18], c;
int n, i, j, k, len, nr, identic;
int main()
{
cin>>n;
for(i=1;i<=n;i++)
{
cin>>s;
len=strlen(s);
for(j=0;j<len-1;j++)
for(k=j+1;k<len;k++)
if(s[j]>s[k])
{
c=s[j];
s[j]=s[k];
s[k]=c;
}
strcpy(v[i],s);
}
for(i=1;i<n;i++)
for(j=i+1;j<=n;j++)
if(strcmp(v[i],v[j])>0)
{
strcpy(aux,v[i]);
strcpy(v[i],v[j]);
strcpy(v[j],aux);
}
nr=0;
for(i=1;i<=n;i++)
{
identic=0;
if(i>1 && strcmp(v[i],v[i-1])==0)
identic=1;
if(i<n && strcmp(v[i],v[i+1])==0)
identic=1;
if(identic==0)
nr++;
}
cout<<nr<<'\n';
return 0;
}