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