package f02_Matrices.Lab;

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

public class P03_IntersectionOfTwoMatrices {
    public static void main(String[] args) throws IOException {
        BufferedReader reader = new BufferedReader(new InputStreamReader(System.in));

        int row = Integer.parseInt(reader.readLine());
        int col = Integer.parseInt(reader.readLine());

        char[][] first = readMatrixFromConsole(reader, row, col);
        char[][] second = readMatrixFromConsole(reader, row, col);
        char[][] result = new char[row][col];

        for (int i = 0; i < first.length; i++) {
            for (int j = 0; j < first[0].length; j++) {
                if (first[i][j] == (second[i][j])) {
                    result[i][j] = first[i][j];
                } else {
                    result[i][j] = '*';
                }
            }
        }

        for (int i = 0; i < result.length; i++) {
            for (int j = 0; j < result[0].length; j++) {
                System.out.print(result[i][j] + " ");
            }
            System.out.println();
        }


    }

    private static char[][] readMatrixFromConsole(BufferedReader reader, int row, int col) throws IOException {

        char[][] matrix = new char[row][col];

        for (int i = 0; i < row; i++) {
            String[] array = reader.readLine().split(" ");
            for (int j = 0; j < col; j++) {
                matrix[i][j] = array[j].charAt(0);
            }
        }
            return matrix;
    }
}