2 Syllables: SU
Abbe, Abbey, acme, aptly, axes, badly, Bradley, cadre, craggy, Daddy, fatty, flabby, flatly, gladly, hackney, Hadley, haply, happy, Hatfield, khaki, madly, Maggie, paddy, sadly, shabby, shaggy, taxi, waxy
3 Syllables: SUU
battlefield, factory, faculties, faculty, gradually, happily, laxity, Magdalene, rhapsody, Saxony, tactfully, virtually
3 Syllables: USU
exactly, unhappy
4 Syllables: SUUU
annually, manually, mutually, sexually
4 Syllables: USUU
continually, habitually, olfactory, refractory, unhappily, unusually
4 Syllables: UUSU
Cincinnati, satisfactory
5 Syllables: USUUU
conceptually, perpetually
5 Syllables: UUSUU
individually, intellectually, manufactory, satisfactorily
6 Syllables: UUUSUU
unsatisfactory

Found 61 words across 9 groupings. Skipped 4 excess words of a similar stem.