import java.util.Scanner;

/*
 * To change this license header, choose License Headers in Project Properties.
 * To change this template file, choose Tools | Templates
 * and open the template in the editor.
 */
/**
 *
 * @author cteam056
 */
public class Tribune {

    public static void main(String[] args) {
        Scanner s = new Scanner(System.in);
        while(s.hasNextInt()){
        int n = s.nextInt();
        int[] field = new int[26];
        char[][] ch = new char[n][n];
        for (int a = 0; a < n; a++) {
            String b = s.next();
            for (int v = 0; v < n; v++) {
                ch[a][v] = b.charAt(v);
            }
        }
        int[] vyskyt = new int[26];
        for (int x = 0; x < n; x++) {
            for (int y = 0; y < n; y++) {
                //vyskyt[new Character(ch[x][y]).]++;
                switch (ch[x][y]) {
                    case 'A':
                        vyskyt[0]++;
                        break;
                    case 'B':
                        vyskyt[1]++;
                        break;
                    case 'C':
                        vyskyt[2]++;
                        break;
                    case 'D':
                        vyskyt[3]++;
                        break;
                    case 'E':
                        vyskyt[4]++;
                        break;
                    case 'F':
                        vyskyt[5]++;
                        break;
                    case 'G':
                        vyskyt[6]++;
                        break;
                    case 'H':
                        vyskyt[7]++;
                        break;
                    case 'I':
                        vyskyt[8]++;
                        break;
                    case 'J':
                        vyskyt[9]++;
                        break;
                    case 'K':
                        vyskyt[10]++;
                        break;
                    case 'L':
                        vyskyt[11]++;
                        break;
                    case 'M':
                        vyskyt[12]++;
                        break;
                    case 'N':
                        vyskyt[13]++;
                        break;
                    case 'O':
                        vyskyt[14]++;
                        break;
                    case 'P':
                        vyskyt[15]++;
                        break;
                    case 'Q':
                        vyskyt[16]++;
                        break;
                    case 'R':
                        vyskyt[17]++;
                        break;
                    case 'S':
                        vyskyt[18]++;
                        break;
                    case 'T':
                        vyskyt[19]++;
                        break;
                    case 'U':
                        vyskyt[20]++;
                        break;
                    case 'V':
                        vyskyt[21]++;
                        break;
                    case 'W':
                        vyskyt[22]++;
                        break;
                    case 'X':
                        vyskyt[23]++;
                        break;
                    case 'Y':
                        vyskyt[24]++;
                        break;
                    case 'Z':
                        vyskyt[25]++;
                        break;
                }
            }
        }
        for (int z = 0; z < vyskyt.length; z++) {
            main:
            {
                if (vyskyt[z] == 1) {
                    char invalid = (char) (z + 'A');
                    for (int x = 0; x < n; x++) {
                        for (int y = 0; y < n; y++) {
                            if (ch[x][y] == invalid) {
                                char valid = 'ř';
                                for (int h = 0; h < 26; h++) {
                                    if (vyskyt[h] == n - 1) {
                                        valid = (char) (h + 'A');
                                    }
                                }
                                System.out.println((x + 1) + " " + (y + 1) + " " + valid);
                                break main;
                            }
                        }
                    }
                } else if (vyskyt[z] == n + 1) {
                    int invalidY = 0;
                    int pY1 = 0;
                    int pY2 = 0;
                    int pX1 = 0;
                    int pX2 = 0;
                    semi:
                        {
                    for (int x = 0; x < n; x++) {
                        
                            int counter = 0;
                            for (int y = 0; y < n; y++) {
                                if (ch[x][y] == (char) (z + 'A')) {
                                    counter++;
                                    if (counter == 1) {
                                        pY1 = y;
                                        pX1=x;
                                    } else if (counter == 2) {
                                        pY2 = y;
                                        pX2=x;
                                        break semi;
                                    }
                                }
                            }
                        }
                    }
                    int counter = 0;
                    for (int x = 0; x < n; x++) {
                        if (ch[x][pY1] == (char) (z + 'A')) {
                            counter++;
                            if (counter == 2) {
                                char valid = 'ř';
                                for (int h = 0; h < 26; h++) {
                                    if (vyskyt[h] == n - 1) {
                                        valid = (char) (h + 'A');
                                    }
                                }
                                System.out.println((pX1 + 1) + " " + (pY1 + 1) + " " + valid);
                                break main;
                            }
                            
                        }
                    }
                    counter = 0;
                    for (int x = 0; x < n; x++) {
                        if (ch[x][pY2] == (char) (z + 'A')) {
                            counter++;
                            if (counter == 2) {
                                char valid = 'ř';
                                for (int h = 0; h < 26; h++) {
                                    if (vyskyt[h] == n - 1) {
                                        valid = (char) (h + 'A');
                                    }
                                }
                                System.out.println((pX2 + 1) + " " + (pY2 + 1) + " " + valid);
                                break main;
                            }
                        }
                    }
                }
            }
        }
    }
}
}
//'