import java.util.*;

public final class tribune {
public final static void main(String args[]) {
    try {
    Scanner s = new Scanner(System.in);
    while (true) {
    int lines = s.nextInt();
    List<Character> fans = new ArrayList<>();
    for (int i = 0; i < lines; ++i) {
	while (!s.hasNext("[a-zA-Z]*"))
	    s.next();
	String str = s.next("[a-zA-Z]*");
	for (Character c : str.toCharArray())
	fans.add(c);
    }
    Set<Character> row = new HashSet<>();
    
    for (int y = 0; y < lines; ++y) {
	char c = fans.get(y*lines+0);
	row.add(c);
    }
    
    boolean found = false;

    for (int x = 0; x < lines; ++x) {
	for (int y = 0; y < lines; ++y) {
		for (int y22 = 0; y22 < lines; ++y22) {
		    if (fans.get(y*lines+x) == fans.get(y22*lines+x) ) {
		for (y22 = 0; y22 < lines; ++y22) {
		    char c2 = fans.get(y22*lines+x);
		    row.remove(c2);
		}
		char expected = row.iterator().next();
			System.out.println((y+1) + " " + (x+1) + ' ' + expected );
			found = true;
			break;
		    }
		}
	    if (!row.contains(fans.get(y*lines+x))) {
		for (int y2 = 0; y2 < lines; ++y2) {
		    char c2 = fans.get(y2*lines+x);
		    row.remove(c2);
		}
		
		int gotX = x;
		int gotY = y;
		char expected = row.iterator().next();
		char got = fans.get(y*lines+x);
		
		if (x == 1) {
		    row.clear();
		    for (int yThird = 0; yThird < lines; ++yThird) {
			row.add(fans.get(yThird*lines+2));
		    }
		    if (!row.contains(expected)) {
			for (int yFirst = 0; yFirst < lines; ++yFirst) {
			    if (fans.get(yFirst*lines) == expected) {
				gotY = yFirst;
			    }
			}
			expected = got;
			gotX = 0;
			
		    }
		    
		}
		
		System.out.println((gotY+1) + " " + (gotX+1) + ' ' + expected );
		
		found = true;
		break;
	    }
	}
	    if (found)
		break;
	}
	}
} catch (NoSuchElementException e) {
    //e.printStackTrace();
    return;
} catch (Exception e) {
    //e.printStackTrace();
    return;
}
    
    }
}