3 Syllables: SUU
custody, cutlery, drudgery, generally, gluttony, Hercules, literally, luckily, lustily, naturally, nunnery, shrubbery, subtly, summary, Tuscany
3 Syllables: USU
discovery, recovery
4 Syllables: SUUU
culturally, laterally, liberally, structurally
4 Syllables: USUU
commercially, eternally, externally, hyperbole, internally, microscopy, proverbially, unluckily, unnaturally
5 Syllables: USUUU
peremptorily
5 Syllables: UUSUU
universally

Found 32 words across 6 groupings.