#!/usr/bin/env pypy3

from itertools import permutations

n,a,b,c = map(int, input().split())
s = [['0' for _ in range(n)] for _ in range(n)]

dx = [0,1,0,-1]
dy = [1,0,-1,0]

for x in permutations([(a,'1'),(b,'2'),(c,'3')]):
    y = list(x[i][0] for i in range(3))
    z = list(x[i][1] for i in range(3))
    for i in range(n):
        for j in range(n):
            for k in range(3):
                if y[k] > 0:
                    s[i][j] = z[k]
                    y[k] -= 1
                    break
    ok = True
    for i in range(n):
        for j in range(n):
            if s[i][j] != '2':
                continue
            m = 0
            for d in range(4):
                x = i + dx[d]
                y = j + dy[d]
                if x < 0 or x >= n or y < 0 or y >= n:
                    continue
                m |= 1 << (ord(s[x][y]) - ord('1'))
            if (m & 5) == 5:
                ok = False
    if ok:
        for i in range(n):
            print("".join(s[i]))
        exit(0)