2 Syllables: SU
Austen, awning, barring, bawling, blocking, blotting, bobbing, bombing, Brahmin, brawling, calling, calming, causing, chopping, clotted, coffin, Collins, costing, coughing, crawling, cropping, crossing, dawning, dodging, dotted, drawing, dropping, falling, fawning, flocking, flogging, frosted, galling, gnawing, Godwin, hauling, hawking, Hawkins, hopping, jarring, jogging, jostling, jotted, knocking, knotted, lauded, locking, lodging, logging, lolling, maudlin, mocking, modeling, nodded, nodding, nothin, offering, offing, offspring, Ovid, pausing, plodding, plotted, plotting, popping, potted, prodded, prodding, province, robbing, Robbins, Robin, rocking, rotted, rotting, sawing, scoffing, shocking, shopping, sobbing, softening, spotted, spotting, sprawling, squatted, squatting, stalking, stocking, stopping, talking, thawing, throbbing, topping, tossing, trotted, trotting, walking, wanting, washing, watching, yawning
2 Syllables: US
3 Syllables: USU
acknowledged, allotted, appalling, applauded, applauding, begotten, defrauded, exhausted, exhausting, installing, marauding, recalling, unspotted, withdrawing
4 Syllables: UUSU
superadded, unacknowledged
Found 118 words across 4 groupings. Skipped 10 excess words of a similar stem.