for x, best, pad in [(9, None, 10), (10, 10, 10), (11, 10, 16),
(15, 10, 16), (16, 16, 16), (17, 16, 32),
(31, 16, 32), (32, 32, 32), (33, 32, None)]:
for x, best, pad in [(9, None, 10), (10, 10, 10), (11, 10, 16),
(15, 10, 16), (16, 16, 16), (17, 16, 32),
(31, 16, 32), (32, 32, 32), (33, 32, None)]: