2 Syllables: SU
button, buxom, Buxton, duction, Dutton, earldom, glutton, Hudson, Hudson's, Hutton, mutton, Putnam, Putnam's, ruffian, Rutland, substance, suction, sudden, Sultan, suppliant, Sutton, twopence, upland, Upton, Vulcan
3 Syllables: USU
4 Syllables: UUSU

Found 62 words across 3 groupings. Skipped 20 excess words of a similar stem.