import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.util.HashMap;
import java.util.HashSet;
import java.util.Map;
import java.util.Set;

/*
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 * and open the template in the editor.
 */

/**
 *
 * @author cteam071
 */
public class Tribune {
    public static BufferedReader in;
    
    public static void main(String[] args) throws IOException {
        in = new BufferedReader(new InputStreamReader(System.in));
        String result = "";
        int teams;       
        String line;
        Map<String,Integer> map;
        
        while ((line = in.readLine()) != null) {
            map =  new HashMap<>();
            teams = Integer.parseInt(line);
            int firstindexjohn = 0;
            int lastindexjohn = 0;
            int rowjohn = 0;
            String john = "";
            String seats = "";
            char[][] rows = new char[teams][teams];
            int row = 0;
            for (int i = 0; i < teams; i++) {
                seats = in.readLine();
                for(int j = 0; j < seats.length(); j++){
                    String s = String.valueOf(seats.charAt(j));
                    if (map.containsKey(s)){
                        map.replace(s, map.get(s)+1);
                    }
                    else {
                        map.put(s, 1);
                    }
                    int firstindex = seats.indexOf(seats.charAt(j));
                    int lastindex = seats.lastIndexOf(seats.charAt(j));
                    if(firstindex != lastindex){
                        firstindexjohn = firstindex;
                        lastindexjohn = lastindex;
                        rowjohn = row;
                        john = String.valueOf(seats.charAt(firstindex));
                    }
                    rows[row][j] = seats.charAt(j);
                }
                row++;
                              
            }
            String correctteam = "";
            if(!john.equals("")){
                for(int a = 0; a<teams; a++){
                    if(rows[rowjohn][firstindexjohn] == rows[a][firstindexjohn]){
                        result = (rowjohn+1) + " " + (firstindexjohn+1) + " ";
                        break;
                    }
                    if(rows[rowjohn][lastindexjohn] == rows[a][lastindexjohn]){
                        result = (rowjohn+1) + " " + (lastindexjohn+1) + " ";
                        break;
                    }
                }
            }
            for(String key : map.keySet()){
                if(map.get(key) == 1){
                    john = key;
                    for(int x=0; x<teams;x++){
                        for(int y=0; y<teams;y++){
                            if(String.valueOf(rows[x][y]).equals(john)){
                                result = (x+1) + " " + (y+1) + " ";
                                break;
                            }
                        }
                    }
                }
                if(map.get(key) == teams-1){
                    correctteam = key;
                }
            }
            result += correctteam;
            System.out.println(result);
            

        }
        
    }
    
    
}