import java.io.BufferedReader;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.IOException;
import java.io.InputStreamReader;
import java.util.HashMap;
import java.util.Map.Entry;

public class prva {

	public static void main(String[] args) throws IOException {

		//System.setIn(new FileInputStream(new File("test.txt")));
		BufferedReader br = new BufferedReader(new InputStreamReader(System.in));

		String riadok;

		while ((riadok = br.readLine()) != null) {

			HashMap<Character, Integer> map = new HashMap<>();

			int n = Integer.parseInt(riadok);

			char[][] pole = new char[n][n];

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

				riadok = br.readLine();

				for (int p = 0; p < n; p++) {

					char c = riadok.charAt(p);
					pole[i][p] = c;

					if (!map.containsKey(c))
						map.put(c, 0);

					map.put(c, map.get(c) + 1);
				}
			}

			char soloChar = ' ';

			for (Entry<Character, Integer> entry : map.entrySet()) {

				if (entry.getValue() == 1) {
					soloChar = entry.getKey();
					break;
				}
			}

			int r = 0;
			int s = 0;

			Loop: for (int i = 0; i < n; i++) {
				for (int j = 0; j < n; j++) {
					if (pole[i][j] == soloChar) {
						r = i;
						s = j;
						break Loop;
					}
				}
			}
			
			char povodny = ' ';
			
			for (Entry<Character, Integer> entry : map.entrySet()) {

				if (entry.getValue() == n-1) {
					povodny = entry.getKey();
					break;
				}
			}
			
			System.out.println((r+1) + " " + (s+1) + " " + povodny);
		}
	}
}