import java.util.*;
public class Main {

    public static void main(String[] args) {
        Scanner in = new Scanner(System.in);
        int size1 = in.nextInt();
        int size2 = in.nextInt();
        int size3 = in.nextInt();
        int size4 = in.nextInt();

        int[][] arr1 = new int[size1][size2];
        int[][] arr2 = new int[size3][size4];

        for (int i = 0; i < arr1.length; i++){
            for (int j = 0; j < arr1[i].length; j++){
                arr1[i][j] = (int) (Math.random()*10);
            }
        }

        for (int i = 0; i < arr2.length; i++){
            for (int j = 0; j < arr2[i].length; j++){
                arr2[i][j] = (int) (Math.random()*10);
            }
        }

        int h = longer(size2, size4);
        int p = longer(size1, size3);
        int[][] suma = new int[p][h];

        for (int i = 0; i < p; i++){
            for (int j = 0; j < h; j++){
                int num1 = 0;
                int num2 = 0;

                if((i >= arr1.length && arr1.length < p) || (arr1[i].length < h && j >= arr1[i].length)){
                    num1 = 0;
                } else {
                    num1 = arr1[i][j];
                }

                if((i >= arr2.length && arr2.length < p) || (arr2[i].length < h && j >= arr2[i].length)){
                    num2 = 0;
                } else {
                    num2 = arr2[i][j];
                }

                suma[i][j] = num1 + num2;

                System.out.print(" [" + i + "] " + " " + " [" + j + "] " + " = " + suma[i][j] + " ");
            }
            System.out.println();
        }
    }

    public static int longer (int a, int b){
        if(a > b){
            return a;
        } else {
            return b;
        }
    }

}