using System;

public class Program

{

    public static void Main()

    {

        int maxRows             = int.Parse(Console.ReadLine());

        int maxCols             = int.Parse(Console.ReadLine());

        int startRow            = int.Parse(Console.ReadLine());

        int startCol            = int.Parse(Console.ReadLine());

        int sum,

        curRowMath,

        curColMath;

        for (int curRow = 1; curRow <= maxRows; curRow++)

        {

            curRowMath = curRow + startRow - 1;

            for( int curCol = 1; curCol <= maxCols; curCol++)

            {

                curColMath = (curCol - 1) + startCol;

                sum = curRowMath * curColMath;

                Console.Write(" {0}", sum); 

            }

            Console.WriteLine();

        }

    }

}