bdoor bhood bhoun bhour bhrrd bo-bo bo-ho bobr bodd- bodor bohon bohor bohun bondo bonon bonou bonud boodh boond boord boorn booru borbo bordo born- borno bornu boro- borod boron boroo borou borro borun boudh boudu bound bourd bourn brobo brodd brodo brohn brond bronn brood broon broud broun brrrr brud- bruhn brunn bruno bruun bubon buddh buddu budur bundu bunud bunun buoho buono buord burn- buron buroo burro burru burud burun d-rod ddddd dhobb dhond dhoon dhubb dhuhr dhund dhunn do-do dobro dodon dodoo dodro dohrn dondo donho donon donor doodo doorn dorno doron dorud douro drbob drobo drood droon drouh droun dubbo dubno dubon duddo dudon dudou duhon dundo dunno dunod dunun durno duron duruh hburn hhhhh hhour hnnbo ho-ho ho-oh hobor hobro hobub hoddu hodhr hodod hodur honbu hondo honno honor honud hoond hoord hoorn hornb horno horod horon horro horru hound hourd hubur hudud hudur huhuh huorn huron huuru ndour nduru nnooo no-do no-no nobob nobuo noduh nohno nohor non-u nondo nonno nonoh noonu noord norbu nordo noron norro norun nu-nu nudur nuhuh nunon nunun nuodb nuoro nurun o-bon o-r-b obhor obodo oboro obudu oddur odour odudu oduro oh-oh ohorn ohour ohrob onhbo onond onoon onorn onour ooooh ooooo ordon ordro ornon orobo orodo orono oruro oudon ouoro ourno rhod- rhodo rhoon ro-ro robbo robo- robon robor robun robur rodbo rodon rodor rohob rohod rohru rohun rondo ronno roodu roond rorbu round rubon rubor rudno ruhnu ruhub rundu runo- runon u-dub ubobo uh-oh uh-uh uhdoh uhhoh uhhuh uhuru unbud undub undun undur unnun unnur unoor unorn unruh unrun unurn uroob urour urubu uuuuu