import java.io.*;
import java.util.*;

public class Solution {

    public static void main(String[] args) {
        Scanner scan = new Scanner(System.in);
        int n = scan.nextInt();
        char a[][] = new char[n][n];
        for (int i = 0; i < n; i++) {
            String s = scan.next();
            for (int k = 0; k < n; k++) {
                a[i][k] = s.charAt(k);
            }
        }
        for (int i = 1; i < a.length - 1; i++) {
            for (int k = 1; k < a[0].length - 1; k++) {
                if (    a[i][k] > a[i - 1][k] && a[i - 1][k] < '9'
                    &&  a[i][k] > a[i + 1][k] && a[i - 1][k] < '9'
                    &&  a[i][k] > a[i][k - 1] && a[i - 1][k] < '9'
                    &&  a[i][k] > a[i][k + 1] && a[i - 1][k] < '9') {
                    a[i][k] = 'X';
                }
            }
        }
        for (char[] t: a) {
            System.out.println(String.valueOf(t));
        }
    }
}