2 Syllables: SU
blowing, boasting, boating, bolting, boring, bowing, bowling, choking, closing, clothing, coaching, coasting, coating, coaxing, Cochin, coding, Colin, combing, comin, coping, croaking, crowing, doting, dozing, floating, flooring, florins, flowing, foaming, folding, glowing, going, groaning, groping, grovelling, growing, growling, holding, hoping, joking, jolting, knowing, loading, loathing, lowing, moaning, molding, moorings, moulding, noting, orange, owing, owning, poking, polling, poring, posing, posting, pouring, probing, quoting, roaming, roaring, roasting, rolling, roving, rowing, scolding, scoring, sewing, showing, sloping, slowing, smoking, snoring, snowing, soaking, soaring, sowing, spokesmen, storing, stroking, strolling, throwing, tolling, towing, voting, warring
3 Syllables: USU
adoring, approaching, atoning, beholding, bestowing, composing, consoling, controlling, corroding, denoting, deploring, devoting, disclosing, disposing, enclosing, encroaching, engrossing, ennobling, enrolling, evoking, exploding, exploring, exposing, extolling, foreboding, foregoing, ignoring, imploring, imposing, inclosing, invoking, opposing, outpouring, patrolling, postponing, promoting, proposing, provoking, reposing, reproaching, restoring, revolting, supposing, unfolding, unloading, upholding, withholding
4 Syllables: UUSU
Found 140 words across 3 groupings. Skipped 5 excess words of a similar stem.