import java.io.*;
import java.util.*;
import java.text.*;
import java.math.*;
import java.util.regex.*;

public class Solution {

    public static void main(String[] args) {
        /* Enter your code here. Read input from STDIN. Print output to STDOUT. Your class should be named Solution. */

        Scanner in = new Scanner(System.in);
        int r = in.nextInt();
        int c = in.nextInt();
        int n = in.nextInt();

        char a[][] = new char[r][c];
        String s[] = new String[r];
        int willblast1 = 0;
        int willblast0 = 1;   // 0 will blast

        for(int i=0;i<r;i++){

             s[i]=in.next();
             s[i].trim();
        }

        for(int i=0;i<r;i++){

             for(int j=0;j<c;j++){
                 a[i][j] = s[i].charAt(j);
             }

        }



        for(int i=2;i<=n;i++){

            if(i%2==0){
                //arrange

                if(willblast0==1){
                    for(int j=0;j<r;j++){
                        for(int k=0;k<c;k++){
                            if(a[j][k]=='.'){
                                a[j][k]='1';
                            }

                        }
                    }
                }else if(willblast1==1){
                    for(int j=0;j<r;j++){
                        for(int k=0;k<c;k++){
                            if(a[j][k]=='.'){
                                a[j][k]='0';
                            }
                        }
                    }
                }

                /*------------------------------------------------
                System.out.println("Debug:************arrange******");
                //System.out.println("");
                for(int j=0;j<r;j++){
                    for(int k=0;k<c;k++){
                        System.out.print(a[j][k]);
                    }
                    System.out.println("");
                }
                System.out.println("Debug:******************");
                /*-----------------------------------------------------*/


            }

            if(i%2==1){
                //detonate
                int right,left,up,down;


                if(willblast1==1){

                  for(int j=0;j<r;j++){
                      for(int k=0;k<c;k++){

                          if(a[j][k]=='1'){

                              right=k+1;
                              left=k-1;
                              up=j-1;
                              down=j+1;
                              a[j][k]='.';
                              /*System.out.println("*****************");
                              System.out.println("right:"+right);
                              System.out.println("left:"+left);
                              System.out.println("up:"+up);
                              System.out.println("down"+down);*/
                              if(right<c){
                                if(a[j][right]=='0')
                                  a[j][right]='.';

                              }
                              if(left>=0){
                                if(a[j][left]=='0')
                                  a[j][left]='.';
                              }
                              if(down<r){
                                if(a[down][k]=='0')
                                  a[down][k]='.';
                              }
                              if(up>=0){
                                if(a[up][k]=='0')
                                  a[up][k]='.';
                              }


                          }
                      }
                  }

                    willblast0=1;
                    willblast1=0;

                }else if(willblast0==1){

                    for(int j=0;j<r;j++){
                        for(int k=0;k<c;k++){

                            if(a[j][k]=='0'){

                                right=k+1;
                                left=k-1;
                                up=j-1;
                                down=j+1;
                                a[j][k]='.';
                              /*  System.out.println("*****************");
                                System.out.println("right:"+right);
                                System.out.println("left:"+left);
                                System.out.println("up:"+up);
                                System.out.println("down"+down);*/
                                if(right<c){
                                  if(a[j][right]=='1')
                                    a[j][right]='.';

                                }
                                if(left>=0){
                                  if(a[j][left]=='1')
                                    a[j][left]='.';
                                }
                                if(down<r){
                                  if(a[down][k]=='1')
                                    a[down][k]='.';
                                }
                                if(up>=0){
                                  if(a[up][k]=='1')
                                    a[up][k]='.';
                                }


                            }
                        }
                    }



                    willblast0=0;
                    willblast1=1;
                }

                /*-------------------------------------------------
                System.out.println("Debug:********detonate**********");
                //System.out.println("");
                for(int j=0;j<r;j++){
                    for(int k=0;k<c;k++){
                        System.out.print(a[j][k]);
                    }
                    System.out.println("");
                }
                System.out.println("Debug:******************");
                /*-----------------------------------------------------*/

            }

            if(i==n){
                //print

                for(int j=0;j<r;j++){
                    for(int k=0;k<c;k++){
                        if(a[j][k]=='0'){
                          System.out.print("0");
                        }else if(a[j][k]=='1'){
                          System.out.print("0");
                        }else if(a[j][k]=='.'){
                          System.out.print(".");
                        }
                    }
                    System.out.println("");
                }
                return;

            }


        }


    }
}