rubra ruere rueun ruhab ruhen ruhnu ruhub ruken rukke runan runer runne runo- runon rurak ruran rurka uaroo ubahn ubank ubeen uber- ubobo ueken uh-ee uh-oh uh-uh uhhoh uhhuh uhura uhuru ukaea ukeke ukhra ukobu ukrah unaka unara unark unaru unban unbar unhue unkar unken unker unkur unnao unnau unnun unnur unona unoor unorn unrar unrra unruh unrun unurn uouee uraan uraba uran- urana urano urare urban urbar urea- ureae urena ureo- urera urhan urker urkun urnok uroob urour urrao urrea uruan urubu uuork uuuuu