1 Sílaba
bnu, cdu, cgu, co, cpu, cru, crú, csu, cu, do, fco, fdu, fu, gnu, hu, lho, lo, mcu, mnu, mo, mru, mu, nhu, no, npo, nu, nú, o, pro, psu, ru, so, tu, u, uh
2 Sílabas
abu, ahu, ainu, alu, angu, apu, bambu, bangu, bauru, baú, bitu, bubu, burnu, caju, cauchu, cautchu, chuchu, grisu, gugu, guru, hindu, igcu, iglu, ipu, itu, jacu, jaú, kuru, lulu, manchu, menu, meru, milu, miru, nandu, peru, recru, reno, tabu, timbu, tipu, tofu, tolu, tutu, udu, urdu, uru, vudu, vuvu, xampu
3 Sílabas
aburu, acaju, belzebu, calulu, canguru, canguçu, caribu, caruru, esaú, franciú, gabiru, iguaçu, jabiru, jururu, marabu, minino, pano-cru, seminu, sobrecu, submenu, superno, sururu, urubu, urubú
4 Sílabas
aracaju, mandacaru, paraguaçu, surucucu, tiramisu