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#include <bits/stdc++.h>
using namespace std;
ifstream fin("restante.in");
ofstream fout("restante.out");
char a[20];
int n,x,s;
struct DB
{
char cuv[20];
};
DB t[36006];
void Citire()
{
int i;
fin >> n;
for( i = 1; i <= n; i++)
{
fin >> a;
x = strlen(a);
sort(a, a + x);
strcpy(t[i].cuv, a);
}
}
inline bool Cmp(const DB A, const DB B)
{
return strcmp(A.cuv,B.cuv) < 0;
}
void Rezolvare()
{
int i,j,sol = n;
sort(t, t + n + 1, Cmp);
for(i = 1; i <= n; i++)
if(strcmp(t[i].cuv,t[i+1].cuv) == 0 || strcmp(t[i].cuv,t[i-1].cuv) ==0)
sol--;
fout << sol << "\n";
}
int main()
{
Citire();
Rezolvare();
return 0;
}