2 Syllables: SU
bronzes, calmness, commas, conduits, Congress, conscious, constructs, dramas, fondest, fondness, genres, haunches, homage, honest, jaundice, launches, longest, Monmouth, monstrous, pompous, pontiff, promise, promptness, strongest, Thomas
3 Syllables: SUU
pianist
3 Syllables: USU
accomplice, Adonis, dishonest, responses, subconscious, unconscious

Found 32 words across 3 groupings. Skipped 1 excess word of a similar stem.