from itertools import chain

w = max(int(input()), 2)
h = max(int(input()), 2)

print(
	('{0}' * w + ('\n{0}' + '{1}'*(w - 2) + '{0}')*(h - 2) + '\n' + '{0}' * w)
	.format('o', ' ')
)

print('\n')

print(
	'\n'.join(
		''.join(map(str, range((i + 1) * 2 - 1, w * 2, 2))) +
		'{1}' * (2 * i) +
		''.join(map(str, range(w * 2 - 1, i * 2, -2)))
		for i in chain(range(0, w), range(w - 1, -1, -1))
	)
	.format('o', ' ')
)