2 Syllables: SU
action, Acton, adjunct, ashen, Ashton, aspen, Aston, Athens, axiom, bastion, Captain, caption, Caspian, Chapman, chasm, craftsman, draughtsman, faction, fashion, fasten, fathom, flaxen, fraction, Gaston, Grafton, Jackson, Jackson's, jasmine, javelin, Latham, Masson, mation, maxim, pageant, passion, platinum, ration, saffron, savants, Saxon, spasm, traction, waxen
3 Syllables: USU
abstraction, assassin, attachment, attraction, compassion, contraction, detachment, detraction, diffraction, distraction, enactment, exaction, extraction, harassment, imagine, impassioned, inaction, infraction, oldfashioned, potassium, reaction, refraction, retraction, Sebastian, subtraction, transaction
4 Syllables: UUSU
5 Syllables: UUUSU
Found 75 words across 4 groupings. Skipped 36 excess words of a similar stem.