Or search: redo, renew, modify, rebuild, remodel, retrace, theorize, theorise, construct, reinstate, conjecture, regenerate, decompress, uncompress, hypothesize
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, corrupting, deducting, disrupting, instructing, obstructing
4 Syllables: UUSU
interrupting

Found 34 words across 3 groupings. Skipped 1 excess word of a similar stem.