2 Syllables: SU
bubbling, budding, chuckling, coupling, cutting, doubling, Dublin, ducking, flooding, hugging, juggling, jutting, plucking, plugging, putting, rubbing, scrubbing, shrugging, shutting, smuggling, struggling, strutting, sucking, suckling, troubling, tugging
3 Syllables: USU
conducting, constructing, constructive, corrupting, deducting, destructive, disrupting, disruptive, inductive, instructing, instructive, obstructing, obstructive, productive, seductive
4 Syllables: UUSU
Found 45 words across 3 groupings. Skipped 1 excess word of a similar stem.