2 Syllables: SU
almond, Arden, ardent, aren, arson, Aryan, Auckland, Austin, autumn, awesome, bargain, Barton, blossom, Boston, bottom, Brabant, broaden, carbon, Carleton, Carlton, Carmen, Carson, caution, Charleston, Charlton, Clarkson, Cochrane, column, common, cotton, darken, Dawson, Falkland, fallen, foreign, garden, garland, garment, gotten, guardian, harden, Harlem, Hartmann, hearken, Holland, Houghton, jargon, Lawson, margin, Marian, Markham, Marston, Martin, Martin's, Nostrand, nostrum, often, parchment, pardon, parlance, parson, pollen, problem, province, quadrant, Robin, rostrum, rotten, Sargent, Scotland, sergeant, Serjeant, sharpen, sodden, Sodom, soften, solemn, sovereign, Spartan, squadron, Stalin, trodden
3 Syllables: USU
apartment, befallen, bombardment, compartment, department, disheartened, downtrodden, enlargement, forgotten, precaution, uncommon, untrodden
4 Syllables: UUSU
Found 95 words across 3 groupings. Skipped 40 excess words of a similar stem.