2 Syllables: SU
aching, ageing, aiding, ailing, aiming, akin, baiting, baking, basing, bathing, blaming, blazing, bracing, braving, breaking, casing, chafing, changing, chasing, claiming, craving, dating, draining, facing, fading, failing, fainting, feigning, flaming, framing, gaining, gaming, gaping, gauging, gazing, glazing, grading, grating, grazing, hailing, hastening, Hastings, hating, haying, labeling, lading, laying, mailing, making, mating, nailing, naming, pacing, painting, paling, paving, paying, phrasing, placing, plating, playing, plaything, praising, praying, preying, quaking, racing, raging, raiding, railing, raining, raising, raisins, raking, ranging, rating, raving, reigning, sailing, salesmen, saving, saying, scaling, scathing, scraping, shading, shaking, shaping, shaving, skating, slaying, spacing, spraying, staging, staining, statesmen, stating, staying, straightening, straining, straying, swaying, taking, taming, tasting, tracing, trading, trailing, training, veiling, wading, waging, wailing, waiting, waiving, waking, waning, wasting, waving, weighing, weighting, whaling
3 Syllables: SUU
3 Syllables: USU
abating, abstaining, acquainting, allaying, amazing, appraising, arranging, assailing, attaining, availing, awaiting, awaking, behaving, betraying, bewailing, campaigning, complaining, constraining, containing, conveying, creating, crusading, curtailing, debasing, debating, decaying, declaiming, defraying, degrading, delaying, detailing, detaining, dilating, disabling, disclaiming, disdaining, displacing, displaying, effacing, embracing, enabling, engaging, engraving, enslaving, entailing, equating, escaping, evading, exchanging, exclaiming, explaining, forsaking, inhaling, invading, maintaining, mistaking, obeying, obtaining, ordaining, parading, partaking, persuading, pertaining, pervading, portraying, prevailing, proclaiming, rearranging, reclaiming, refraining, regaining, relating, remaining, repaying, replacing, restraining, retaining, retracing, sustaining, unchanging, unfailing, unveiling
4 Syllables: UUSU
appertaining, ascertaining, desperation, disobeying, entertaining, interlacing, masquerading, unavailing
Found 214 words across 4 groupings. Skipped 11 excess words of a similar stem.