def solve():

    N, K = map(int, input().split())
    sy, sx = map(lambda x: x - 1, map(int, input().split()))
    ty, tx = map(lambda x: x - 1, map(int, input().split()))
    d = abs(sy - ty) + abs(sx - tx)
    if d <= K <= d + (d // 2) * 2 and (d - K) % 2 == 0:
        ans = [['.'] * N for _ in range(N)]
        for y in range(N):
            for x in range(N):
                dd = abs(y - sy) + abs(x - sx)
                if dd % 2 == 1 and 1 <= dd <= K - d:
                    ans[y][x] = '#'
        
        for a in ans:
            print(''.join(a))
    else:
        return print(-1)



# T = int(input())
T = 1
for _ in range(T):
    solve()