b-r-k bbook bkorn bo-bo bobko bobok bobr bokko bokok bokor bokun bombo bonon bonou bonum booko boomb boonk boorn booru borbo borko borku bormo born- borno bornu boro- borok borom boron boroo borou borro borum borun bouko bourn brmmm brobo brom- bromo bronk bronn brook broom broon brouk broun brrrr brumm brunk brunn bruno bruun bubon bukk- buknu bukom bukor bumbo bumbu bunko bunuk bunun buono burn- buron buroo burro burru buruk burun k-rob knokk knork knorr knurr ko-ko kobru kobuk kobun kokko kokor kokou kokum kokur kombo kombu komku komon konbu konno konnu konro konur koonu koorn kooru korbo korku korno korom koron koror korro koruk korun kouno krnuo kromo kronk kroon kroun krumm krunk kruun kubok kukko kukok kukur kumbo kumon kumru kumuk kunku kunur kurbu kurku kuruk mboro mburu mmmmm mobor mobro mokko mokon mokro mokuk mokum mombo mombu monno mono- monok monon monor monro mookk moorn mooro morbo mormo moron moror morou morro morum morun mounk mourn mrmom mrorr mukur mumbo mummu mumok mumun munro murko murom muron muror murro murru muruk murum nbomb nkomo nkubu nnooo no-no nobob nobuo nokko nokon nommo nomo- nomom non-u nonno noonu norbu norm- norok noron norro norum norun nu-nu nunon nunun nuoro nurmo nuruk nurun o-bon o-r-b oboro obrok obrom okkur okobo okoro okubo okuku okuru omoon omoro omron omuku onmun onoon onorn onour ooooo orbom orkom ormur ornon orobo oromo orono orrum oruku oruro ouoro ourno rmnmn ro-ro robbo robo- robon robor robun robur rokkk rokon romon ronk- ronko ronno ronok roomu rorbu rouko roumm rubon rubor rumbo rummo rummu rumor runo- runon ruomu ubobo ukobu umbro umour unkur unnun unnur unoor unorn unrun unurn urkun urnok uroob urour urubu uuork uuuuu