2 Syllables: SU
Austen, awning, barring, bawling, blocking, blotting, bobbing, bombing, bosses, Brahmin, brawling, broadening, calling, calming, causes, causing, chopping, clauses, coffin, College, Collins, costing, cottage, coughing, crawling, cropping, crosses, crossing, dawning, dodging, drawbridge, drawing, dropping, falling, fawning, flocking, flogging, galling, glosses, gnawing, Godwin, hauling, hawking, Hawkins, Hodges, hopping, hostage, jarring, jogging, jostling, knocking, knowledge, locking, lodges, lodging, logging, lolling, losses, maudlin, mocking, modeling, mosses, nodding, notches, nothin, offering, offing, offspring, olive, pauses, pausing, plodding, plotting, popping, prodding, province, quarreling, robbing, Robbins, Robin, rocking, rotting, sauces, sausage, sawing, scoffing, shocking, shopping, sobbing, softening, spotting, sprawling, squatting, stalking, stocking, stoppage, stopping, talking, thawing, throbbing, topping, tosses, tossing, trotting, vases, walking, wanting, washes, washing, watches, watching, yawning
2 Syllables: US
3 Syllables: SUU
auditing, blossoming, bothering, causative, fostering, goddesses, gossiping, honoring, honouring, modelling, novices, offices, positive, profiting, promising, prospering, slaughtering, talkative, Thomas's, tottering, vomiting, watering
3 Syllables: USU
acknowledge, appalling, applauding, begotten, exhausting, exhaustive, installing, marauding, recalling, withdrawing
4 Syllables: USUU
4 Syllables: UUSU
Found 150 words across 6 groupings. Skipped 12 excess words of a similar stem.