2 Syllables: SU
bungling, bunting, coming, crumbling, Cummings, cunning, drumming, dumping, fronting, fumbling, funding, grumbling, grunting, humbling, humming, hunting, jumping, mumbling, plumbing, plunging, pumping, pumpkin, punching, rumbling, running, shunning, something, stumbling, stunning, summing, thumping
3 Syllables: USU
4 Syllables: UUSU
Found 36 words across 3 groupings. Skipped 1 excess word of a similar stem.