Or search: link, cohesion, coherence, continuity, consistency, comprehensibility, understandability
3 Syllables: SUU
decency, decently, differently, distantly, evenly, frequency, frequently, recently, regency, tyrannies, tyranny
3 Syllables: UUS
vehemently
4 Syllables: USUU
consistency, consistently, deficiency, efficiency, efficiently, exigency, indecency, indifferently, infrequently, insistently, persistency, persistently, proficiency, sufficiency, sufficiently, unevenly, unfrequently
5 Syllables: UUSUU
inconsistency, inefficiency, insufficiency, insufficiently, intermittently

Found 34 words across 4 groupings.