raum rbbb rbbr rble rbmk rea- reae reak real ream rear reau reba rebb rebe rebk rebu reeb reek reel reem reka reke rela relb rele rell relm rema reme rera rere reru reue reuk reul reuu rlab rlee rleu rlml rlua rmll rrkm rrle rrrr rrum ruba rubb rube rubu ruel ruer ruka ruke rukk ruku rula rule rulk rull ruma rumb rume ruml rumm rura rure ruru uaru uaua ubal ubar ubba ubbe ubek uber ubla uble ubra ueba uele uell ukba ukek ukeu ukla ukma ukra ukum ukur ulaa ulae ulam ular ulea uleb ulee ulek ulla ulle ullr ulma ulme ulmu ulua uluk ulul ulum umaa umak umar umb- umba umbe umer umka umla umma umra ural urau urba urbe ure- urea urka urke urla urle urma urra urre uruk urum urur uulu uuuu