3 Syllables: SUU
generally, literally, naturally
4 Syllables: SUUU
culturally, honorably, honourably, hospitably, laterally, liberally, moderately, nominally, ominously, profitably, structurally, tolerably
4 Syllables: USUU
unnaturally
5 Syllables: USUUU
anonymously, intolerably, peremptorily
6 Syllables: UUUSUU
involuntarily

Found 20 words across 5 groupings.