#include <bits/stdc++.h>
using namespace std;

#define rep(i, a, b) for (int i = a; i < b; i++)
using ll = long long;

int main(){
    int n, a, b, c;
	cin >> n >> a >> b >> c;
    vector<vector<int>> v(n, vector<int>(n));
    int s = 0;
    vector<int> x{2, 1, 3}, y{b, a, c};
    if(a < c) {
        swap(x[1], x[2]);
        swap(y[1], y[2]);
    }
    rep(i, 0, n) {
        if(i % 2) {
            for(int j = n - 1; j >= 0; j--) {
                if(v[i][j]) continue;
                v[i][j] = x[s];
                y[s]--;
                if(y[s] == 0) {
                    s++;
                    if(s == 1 && j) {
                        v[i][j - 1] = x[s];
                        y[s]--;
                        if(i + 1 < n) {
                            v[i + 1][j] = x[s];
                            y[s]--;
                            if(y[s] == 0) s++;
                        }
                    }
                }
            }
        }
        else {
           rep(j, 0, n) {
                if(v[i][j]) continue;
                v[i][j] = x[s];
                y[s]--;
                if(y[s] == 0) {
                    s++;
                    if(s == 1 && j < n - 1) {
                        v[i][j + 1] = x[s];
                        y[s]--;
                        if(i + 1 < n) {
                            v[i + 1][j] = x[s];
                            y[s]--;
                            if(y[s] == 0) s++;
                        }
                    }
                }
           }
        }
    }
    rep(i, 0, n) {
        rep(j, 0, n) cout << v[i][j] << " ";
        cout << endl;
    }
}