using System;

using System.Collections;

using System.Collections.Generic;

using System.Linq;

public class Program

{

    public static void Main()

    {

        int dim_x, dim_y;

        dim_x = GetInt(Console.ReadLine()); dim_y = GetInt(Console.ReadLine());

        for (int i = 0; i < dim_y; i++) 

            {for (int j = 0; j < dim_x; j++) 

        {

            if (i%2 == 0) {if (j%2 != 0) {Console.Write("💛");} else if (j%2 == 0) {Console.Write("🖤");};}

            else if (i%2 != 0) {if (j%2 == 0) {Console.Write("💛");} else if (j%2 != 0) {Console.Write("🖤");};};

        } 

            Console.WriteLine("\n");}

​

    }

    public static int GetInt(string input) 

    {

        bool IsParsable; int num_end;

        IsParsable = Int32.TryParse(input, out num_end);

        if (IsParsable == true) {num_end = num_end;}    

        if (IsParsable == false) {num_end = 1;}

        return num_end;

    }

}