bbbb bbdd bbdo bblb bd-j bd-r bldr blob blod bloo blou blub blud blur bobb bobo bobu bodb bodo bodu bojd bojo boju bold boll bolo bolu boob bood bool boor bor- bord borj boro borr boru boud boul bour brdo brob brod brol broo bror brou brrr brud bubb bubo bubu budb budd budl budo budu bujo buju bulb buld bull bulu buol bur- burb burd burj burl buro burr buru d-bo dddd ddub dlbd dobb dobl dobu dod- dodd dodo dojo dold doll dolo dolu doob dood dool door dord doro dorr doru doub doud doul dour drob drod drol drou drub druj druu dub- dubb dubu dudd dudo dudu dull dulo dulu duo- duro duru duul duur j-ro jbob jobo jobu jodo jojo joll jolo jool joor jorl joro joul jour jrbr jubu judd judo juju jurd jurr juul lblr lldb llll llod lloo llud lob- lobb lobo lojo lold loll lolo loob lood looj lool loor lord loro loud loul lour louu lrdd lrrr ludd ludo luju lull lulu lurd obbo oblu obol obor obro odbo oddd odoo odor odou odrl odur olbo oldb olju ollo olor olur oold oolo oooo oord orbb orbo orbu ordo ordu orlo orlu oro- oror orro orub oruj ouju ould oulu our- ouro ouu- rbbb rbbr rjdj rob- robb robo robu rodd rodo rojo rold roll rolo roob rood rool roor roro roru roub roud roul rrrr rubb rubu rudd rudl rudo rull rulo rurd ruro ruru ruud ubbo ublo ubod ubud udjo udoo ullo ullr ulo- ulul uor- urdu uro- urol uroo urur uulu uuuu