2 Syllables: SU
beaches, beeches, breaches, breezes, ceaseless, ceases, cheeses, clearest, cleavage, creases, eases, edicts, Edith, Felix, fiendish, freest, freezes, greenish, Greenwich, heedless, helix, leakage, leases, leeches, lyrics, meekness, nieces, peaches, penis, Phoenix, pieces, pleases, preaches, prefix, reaches, realism, realist, Regis, Rhenish, secrets, seemeth, seizes, sieges, speeches, spirits, Swedish, teaches, thesis, zenith
3 Syllables: SUU
3 Syllables: USU
3 Syllables: UUS
4 Syllables: UUSU
Found 60 words across 5 groupings. Skipped 3 excess words of a similar stem.