2 Syllables: SU
Berwick, Burnet, burnished, churches, churlish, courage, curses, Curtis, earnest, Ernest, flourish, furnish, furtive, girlish, merges, nourish, nurses, perches, perfect, permit, purges, purplish, purses, scourges, searches, service, skirmish, surfaced, surges, Turkish, urges, verdict, verses, worketh, worship
3 Syllables: SUU
3 Syllables: USU
allergic, assertive, coercive, discourage, discursive, encourage, imperfect, researches, reverses, subversive
Found 46 words across 3 groupings. Skipped 9 excess words of a similar stem.