mtel mtlb mtle mtre mtrl mtrr mttr mube mubi muee muel muet muie muil muir muit muke muki mule muli mulk mull mulm mult mulu mume mumm mumu mure muri murk murl murr murt muru mute muti mutt mutu muut rbbb rbbr rble rbmk rebb rebe rebk rebu reeb reek reel reem reet reii reik reil reim reir reit reiu reke reki rekt relb rele rell relm relt reme remi rere reri rert reru rete reti retr rett reue reuk reul reut reuu rib- ribe ribu riek riel riem rier riet rieu rike riki rikk riku rile rill rilu rime rimi rimm rimu rire riri rite riti ritl ritt ritu riue rlee rleu rlml rmll rmtu rrkm rrle rrrr rrum rtee rtei rtle rtlt rtmi rtml rubb rube rubi rubu ruel ruer ruet ruit ruke ruki rukk ruku rule rulk rull rumb rume rumi ruml rumm rumt rure ruri ruru rute ruti rutl rutt rutu tbil tbit tbrb tebu teek teel teem teer teet teie teil teim teir teiu teke tel- tele teli tell telt telu teme temu ter- tere teri terk term terr teru tete teti tetr tett tetu teuk teut tibi tibu tie- tiee tiei tiel tier tiet tiit tiiu tike tiki tiku tile till tilr tilt time timi timm timu tirb tire tiri tirl tirr tiru tite titi titt titu tium tlik tlli tmbr tmil tmmk tmtt tre- tree trei trek trem tret treu tri- trib trie trik tril trim trit trmb trmi trmk trml trmu trte trtr trub true truk trut truu ttbb tter ttim ttml tttt ttul tubb tube tubr tubu tuei tuel tuer tuet tuik tuil tuim tuit tuiu tuke tule tuli tulk tull tulu tumb tume tumi tumu turb ture turi turk turm turr turt turu tute tuti tutl tutt tutu tuum u-ie ubbe ubbi ubek uber ubet ubii ubik ubir ubit uble ubli ueir ueki uele ueli uell uile uiml uirr ukek ukeu ukum ukur uleb ulee ulek ulie ulik ulim ulle ulli ullr ulme ulmi ulmu ulti ultt uluk ulul ulum umb- umbe umbi umer umet umik umit umri umut urbe urbi ure- uret urib urie urik urim uriu urke urle urmi urre urri urte uruk urum urur urut utel uter utik util utmb utri utti uttu uulu uuri uuuu