2 Syllables: SU
credo, Creole, Deo, depot, eco, ego, freehold, Geo, Guido, heroes, hero's, ito, keyhole, keynote, keystone, KINO, Leo, lino, negroes, neo, Philo, primo, Rico, Rio, seacoast, steamboat, Theo, threefold, trio, veto, vivo
3 Syllables: USU
4 Syllables: UUSU
Found 40 words across 3 groupings. Skipped 3 excess words of a similar stem.