b-r-k bbook bkorn bmp-r bo-bo bobko bobok bobr bobup 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 borup 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 bumpo bunko bunuk bunun buono burn- buron buroo burro burru buruk burun k-p-r k-pop k-rob kmnbp knokk knoop knork knorr knurr ko-ko kobru kobuk kobun kokko kokor kokou kokum kokur kombo kombu komku komon kompo konbu konno konnu konro konur koonu koorn kooru kopru korbo korku korno korom koron korop koror korpo korro koruk korun korup kouno krnuo kromo kronk kroon kropp kroun krumm krump krunk krupp kruun kubok kukko kukok kukup kukur kumbo kumon kumpo kumru kumuk kunku kunur kupon kupur kurbu kurku kuruk kurup mboro mburu mmmmm mobor mobro mokko mokon mokpo mokro mokuk mokum mombo mombu monno mono- monok monon monor monro mookk moorn mooro mopup morbo mormo moron morop moror morou morro morum morun morup mounk mourn mpbou mrmom mrorr mukur mumbo mummu mumok mumun munro muppu murko murom muron muror murro murru muruk murum murup n-p-n nbomb nbump nkomo nkpor nkubu nnooo no-no no-op nobob nobuo nokko nokon nommo nomo- nomom non-u nonno nonop noonu nopun norbu norm- norok noron norro norum norun nu-nu nunon nunun nuoro nupur nurmo nuruk nurun o-bon o-r-b oboro obrok obrom okkur okobo okoro okubo okuku okuru omoon omoro ompok omron omuku omupo onmun onoon onorn onour onpop ooooo opobo opoku oppon oppum opump orbom orkom ormur ornon orobo oromo orono orrum oruku oruro oukup ouoro ourno p-n-p pbook pbrok po-on po-po pokou pombo pomor pompu pomum ponnu ponor ponup poopo poork popon popop poppo popup porn- porno poro- poron porro porum porur probo promo pronk proor prop- propn propp propr prun- pruno pubo- punbb punon punuk puppo purku purmo puro- purok purum rmnmn ro-ro robbo robo- robon robop robor robun robur rokkk rokon romon rompo rompu ronk- ronko ronno ronok roomu rorbu rouko roumm rprop rubon rubor rubup rumbo rummo rummu rumor rumpo runo- runon runup ruomu u-pop ubobo ukobu ukpor ukrop umbro umour unkur unnun unnur unoor unorn unrun unurn upnor uppon uprun urkun urnok uroob urour urubu uuork uuuuu