3 Syllables: SUU
bloodthirsty, custody, cutlery, drudgery, gluttony, luckily, lustily, luxuries, luxury, nunnery, shrubbery, stubbornly, submarine, subtly, summary, Tuscany, utterly
3 Syllables: USU
4 Syllables: USUU
5 Syllables: UUSUU
6 Syllables: UUUSUU
Found 23 words across 5 groupings. Skipped 1 excess word of a similar stem.