#include <stdio.h>

int main(){

    int r, s, x, y, i, j, raspon;

    scanf("%d %d", &r, &s);

    char a[r][s];
    char a_out1[r][2 * s];
    char a_out2[r][2 * s];

    for ( i = 0; i < r; i++ ){
        for ( j = 0; j < s; j++ ){
            scanf(" %c", &a[i][j]);
        }
    }

    scanf("%d %d", &x, &y);

    // prva polovica
    for ( i = 0; i < r; i++ ){
       for ( j = 0; j < s; j++ ){
          a_out1[i][j] = a[i][j];
          a_out1[i][2 * s - j - 1] = a[i][j];
       }
    }

    raspon = r - 1;

    for ( i = raspon; i >= 0; i-- ){
       for ( j = 0; j < 2 * s; j++ ){
          a_out2[raspon - i][j] = a_out1[i][j];
       }
    }
    //promjena znaka
    if ( x <= r){
        if ( a_out1[x - 1][y - 1] == '.' ){
             a_out1[x - 1][y - 1] = '#';
        }
        else{
             a_out1[x - 1][y - 1] = '.';
        }
    }
    else{
        if ( a_out1[x - r - 1][y - 1] == '.' ){
             a_out1[x - r - 1][y - 1] = '#';
        }
        else{
             a_out1[x - r - 1][y - 1] = '.';
        }
    }
    //ispis
    for ( i = 0; i < r; i++ ){
        for ( j = 0; j < 2 * s; j++ ){
            printf("%c", a_out1[i][j]);
        }
        puts("");
    }

    for ( i = 0; i < r; i++ ){
        for ( j = 0; j < 2 * s; j++ ){
            printf("%c", a_out2[i][j]);
        }
        puts("");
    }
   return 0;
}