#include <bits/stdc++.h>
using namespace std;
int a[30][30];
int n,m,x,y;
bool house(int i,int j){
	if(i==x and j==y)return 0;
	if(i==x+1 and j==y+2)return 0;
	if(i==x+1 and j==y-2)return 0;
	if(i==x+2 and j==y+1)return 0;
	if(i==x+2 and j==y-1)return 0;
	if(i==x-1 and j==y+2)return 0;
	if(i==x-1 and j==y-2)return 0;
	if(i==x-2 and j==y+1)return 0;
	if(i==x-2 and j==y-1)return 0;
	return 1;
}
int main(){

	cin>>n>>m>>x>>y;
	for(int i=0;i<n;i++){
		a[i][0]=1;
	}
	for(int i=0;i<m;i++){
		a[0][i]=1;
	}
	for(int i=1;i<n;i++){
		for(int j=1;j<m;j++){
			if(!house(i,j)){
				a[i][j]=0;
				continue;
			}
			a[i][j]=a[i][j-1]+a[i-1][j];
		}
	}
	for(int i=0;i<n;i++){
		for(int j=0;j<m;j++){
			cout<<a[i][j]<<' ';
		}
		cout<<endl;
	}	
}