Or search: lock, raft, rear, groin, revet, wattle, concept, rebuild, retrace, category, geometry, theorize, theorise, customize, delineate
2 Syllables: SU
blooded, bucket, buttocks, couplet, doublet, flooded, glutted, hubbub, Ludwig, public, publick, public's, puppet, rugged, studded, subject
3 Syllables: USU
conducted, corrupted, deducted, disrupted, erupted, inducted, instructed, obstructed, Republic
4 Syllables: UUSU
interrupted, reconstructed, uncorrupted, uninstructed, unobstructed
5 Syllables: UUUSU
uninterrupted

Found 31 words across 4 groupings. Skipped 6 excess words of a similar stem.