rora rork roro roru roua roud rouk roum roun rrad rrkm rrna rrrr rrum rrun ruad ruan ruda rudd rudo ruka rukk rukn ruku ruma rumm rumo runa rund runk runn runo ruok rura rurd ruro ruru ruud ruun uaru uaua udaa udad udar udau udma udon udoo udra uduk udun ukko ukma ukok ukon ukra ukum ukur umaa umak uman umar umka umma ummo umno umok umor umra unaa unam unan unar unau unda undo unka unkn unko unma unmr unna unno unon unra unro unum uomo uor- urad uran urao urau urda urdu urka urma urna uro- uroa urok urom uroo urra uruk urum urun urur uuno uuuu