import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.util.Arrays;
import java.util.HashMap;
import java.util.Map;

public class Tribune {
    public static BufferedReader in;

    static char missing;
     static char more;
    static int x,y;

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

        String line;
        try {
            while ((line = in.readLine()) != null)
            {
                int count = Integer.parseInt(line);
                Map<Character, Integer> map = new HashMap<>();
                char[] chars = new char[count * count];
                for(int i = 0; i< count; i++)
                {
                    line = in.readLine();
                    for(int j = 0; j < line.length(); j++)
                    {
                        char ch = line.charAt(j);
                        chars[i * count + j] = ch;
                        map.put(ch, map.containsKey(ch) ? map.get(ch) + 1: 1);
                    }
                }

                map.entrySet().forEach(me -> {
                    if(me.getValue() == count - 1)
                        missing = me.getKey();
                    if(me.getValue() == count + 1 || me.getValue() == 1)
                        more = me.getKey();
                });

                for(int i = 0; i< count; i++)
                {
                    // row
                    int moreCount = 0;
                    for(int j = 0; j < line.length(); j++)
                    {
                        if(chars[i * count + j] == more)
                            moreCount++;
                    }

                    if((!(map.get(more) == 1) && moreCount == 2) || (map.get(more) == 1 && moreCount == 1))
                        x = i;


                    // column
                    moreCount = 0;
                    for(int j = 0; j < line.length(); j++)
                    {
                        if(chars[j * count + i] == more)
                            moreCount++;
                    }
                    if((!(map.get(more) == 1) && moreCount == 2) || (map.get(more) == 1 && moreCount == 1))
                        y = i;
                    //if(moreCount == 2)

                }
                System.out.println((x + 1) + " " + (y + 1) + " " + missing);
            }
        } catch (IOException e) {
            e.printStackTrace();
        }
    }
}