import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.Collections;
import java.util.HashSet;
import java.util.List;
import java.util.Scanner;
import java.util.Set;

public class Main {

	/**
	 * @param args
	 * @throws IOException
	 */
	public static void main(String[] args) throws IOException {

		HashSet<String> set = new HashSet();

		BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
		String line;
		Scanner sc = new Scanner(System.in);
		
		
		List<Integer> all = new ArrayList<>();
		int times;

		String q = "";
		while ((q = br.readLine()) != null) {

			if (q.equals(""))
				break;
			int numbers = new Scanner(q).nextInt();

			for (int i = 0; i < numbers; i++) {

				line = br.readLine();

				Set<Character> g = new HashSet();
				Object[] n = new Object[line.length()];

				for (int j = 0; j < line.length(); j++) {
					g.add(line.charAt(j));
				}

				n = g.toArray();
				Arrays.sort(n);
				String w = "";
				for (int j = 0; j < n.length; j++) {
					w += n[j];
				}

				set.add(w);
			}
			all.add(set.size());
			set.clear();
		}

		for(int i = 0; i < all.size(); i++) {
			System.out.println(all.get(i));
		}
		
	}
}