using System;
using System.Collections.Generic;
using System.Linq;

class CheatSheet
{
    static void Main()
    {
        int row = int.Parse(Console.ReadLine());
        int col = int.Parse(Console.ReadLine());
        long horizontalStart = long.Parse(Console.ReadLine());
        long verticalStrat = long.Parse(Console.ReadLine());
        long[,] matrix = new long[row,col];
        long start = horizontalStart * verticalStrat;
        for (long i = 0, vertStep = start; i < row; i++, vertStep +=verticalStrat)
        {
            for (long j = 0, horizStep = vertStep; j < col; j++, horizStep +=horizontalStart)
            {
                matrix[i, j] = horizStep;
            }
            horizontalStart++;
        }

        for (long i = 0; i < row; i++)
        {
            for (long j = 0; j < col; j++)
            {
                Console.Write("{0} ",matrix[i,j]);
            }
            Console.WriteLine();
        }
    }
}