import java.util.Scanner;
import java.util.HashMap;

public class Tribune {

    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);

        while (sc.hasNextInt()) {
            int n = sc.nextInt();
            HashMap<Character, Integer> hm = new HashMap<>();
            HashMap<Character, Integer> hmPosX = new HashMap<>();
            HashMap<Character, Integer> hmPosY = new HashMap<>();
            for (int i = 0; i < n; i++) {
                String s = sc.next();
                for (int k = 0; k < n; k++) {
                    char c = s.charAt(k);
                    if (hm.containsKey(c)) {
                        int j = hm.get(c);
                        j++;
                        hm.replace(c, j);
                    } else {
                        hm.put(c, 1);
                        hmPosY.put(c, i);
                        hmPosX.put(c, k);
                    }
                }
            }
            
            char z = 'c';
            char d = 'd';
            n--;
            for (char c : hm.keySet()) {
                if (hm.get(c) == 1) {
                    z = c;
                } 
                if (hm.get(c) == n) {
                    d = c;
                }
            }
            System.out.println((hmPosY.get(z) + 1) + " " + (hmPosX.get(z) + 1) + " " + d);
        }
    }
}