2 Syllables: SU
acting, active, adding, Atkins, average, axes, babbling, backing, baffling, battling, blackening, blacksmith, bragging, captive, Catherine, chatting, clapping, cracking, crackling, dazzling, dragging, fastening, fattening, flagging, flapping, flattening, grabbing, grappling, hacking, happening, javelin, Katherine, lacking, lagging, lapping, lapses, maddening, mapping, matting, nagging, napkin, packing, padding, paddling, patting, racking, rapine, rationing, rattling, sacking, sagging, sapling, slapping, snapping, stabbing, straggling, strapping, tacking, tackling, tapping, taxes, taxing, tracking, trapping, traveling, travelling, wagging, waxes, waxing, wrapping
3 Syllables: SUU
annulling, battering, chattering, clamoring, clamouring, clattering, fashioning, flattering, galloping, gathering, hammering, Jacobin, labyrinth, managing, mastering, mattresses, narrative, Nazareth, palaces, pasturage, patronage, scattering, shattering, slackening, smattering, staggering, stammering, swaggering, vassalage
3 Syllables: USU
abstracting, adapting, adaptive, attacking, attracting, attractive, collapses, collapsing, combating, dismantling, distracting, enacting, exacting, extracting, inactive, reacting, reactive, refractive, relapses, relapsing, relaxes, relaxing, subtracting, transacting, unflagging
4 Syllables: USUU
4 Syllables: UUSU
5 Syllables: UUUSU
Found 132 words across 6 groupings. Skipped 9 excess words of a similar stem.