2 Syllables: SU
arches, arching, argent, arming, bargain, barges, barking, barring, carnage, Carthage, cartridge, carving, charges, charging, Charles's, charming, charting, darkening, darling, darting, Darwin, Darwin's, farming, farthing, garbage, gardening, guarding, hardening, Harding, harming, jarring, marches, marching, marking, marshes, Martin, Marvin, parking, parting, partridge, quarreling, sharpening, smarting, snarling, sparkling, starting, startling, starving
3 Syllables: SUU
3 Syllables: USU
alarming, departing, disarming, discarding, disheartening, embarking, enlarges, enlarging, imparting, regarding, remarking, retarding
4 Syllables: UUSU
Found 62 words across 4 groupings. Skipped 4 excess words of a similar stem.