2 Syllables: SU
after, Astor, azure, bachelor, badger, bastard, Caspar, castor, catcher, cavern, faster, gather, Havre, hazard, Jasper, lather, laughter, master, Mather, passer, pastor, pasture, patchwork, plaster, rafters, rather, Stafford, stature, Strasburg, tavern, traveler, Travers, traverse, vaster
3 Syllables: USU
4 Syllables: UUSU
Found 40 words across 3 groupings. Skipped 18 excess words of a similar stem.