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.Arrays;
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 = ' ';
			char tooManyChar = ' ';
			char povodny = ' ';

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

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

				if (entry.getValue() == n + 1) {
					tooManyChar = entry.getKey();
				}
				
				if (entry.getValue() == n - 1) {
					povodny = entry.getKey();
				}
			}

			if (soloChar != ' ') {
				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;
						}
					}
				}

				System.out.println((r + 1) + " " + (s + 1) + " " + povodny);
			} else {
				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] == tooManyChar) {

							boolean vRiadku = false;

							for (int k = 0; k < n; k++) {
								if (j != k && pole[i][k] == tooManyChar) {
									vRiadku = true;
									break;
								}
							}

							if (!vRiadku)
								continue;

							boolean vStlpci = false;

							for (int k = 0; k < n; k++) {
								if (i != k && pole[k][j] == tooManyChar) {
									vStlpci = true;
									break;
								}
							}

							if (vStlpci) {
								r = i;
								s = j;
								break Loop;
							}

						}
					}
				}

				System.out.println((r + 1) + " " + (s + 1) + " " + povodny);
			}
		}
	}
}