2 Syllables: SU
0, credo, Creole, Deo, depot, eco, ego, freehold, Guido, hero, ito, keyhole, keynote, keystone, KINO, Leo, lino, negro, neo, Nero, Philo, primo, Rico, Rio, seacoast, steamboat, Theo, threefold, trio, veto, vivo, zero
3 Syllables: USU
4 Syllables: UUSU
Constantino, Galileo, incognito

Found 43 words across 3 groupings. Skipped 3 excess words of a similar stem.