/*
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 * To change this template file, choose Tools | Templates
 * and open the template in the editor.
 */
import java.util.*;
/**
 *
 * @author tym17
 */
public class tribune {

    static String[] radky = new String[26];
    static int n;
    /**
     * @param args the command line arguments
     */
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        
        
        while(sc.hasNextInt()) {
            n = sc.nextInt();
            int x = 0, y = 0;
            char navic = 'A', chybi = 'A';
            sc.nextLine();
            for(int i = 0; i < n; i++) {
                radky[i] = sc.nextLine();
            }
            for(int i = 0; i < n; i++) {
                for(int j = 0; j < n; j++) {
                    if((vyskytuRadek(radky[i].charAt(j), i) != 1 && vyskytuSloupec(radky[i].charAt(j), j) != 1)                            
                            || vyskytu(radky[i].charAt(j)) == 1) {
                        x = i+1;
                        y = j+1;
                        navic = radky[i].charAt(j);
                        
                    }
                }
            }
            for(int i = 0; i < n; i++) {
                for(int j = 0; j < n; j++) {
                    if(vyskytu(radky[i].charAt(j)) == n - 1) {
                        chybi = radky[i].charAt(j);
                    }
                }
            }
            System.out.println(x + " " + y + " " + chybi);
        }
    }
    
    static int vyskytu(char c) {
        int pocet = 0;
        for(int i = 0; i < n; i++) {
            for(int j = 0; j < n; j++) {
                if(radky[i].charAt(j) == c) {
                    pocet++;
                }
            }
        }
        return pocet;
    }
    static int vyskytuRadek(char c, int radek) {
        int pocet = 0;
        for(int j = 0; j < n; j++) {
            if(radky[radek].charAt(j) == c) {
                pocet++;
            }
        }
        return pocet;
    }
    static int vyskytuSloupec(char c, int sloupec) {
        int pocet = 0;
        for(int j = 0; j < n; j++) {
            if(radky[j].charAt(sloupec) == c) {
                pocet++;
            }
        }
        return pocet;
    }
    
}