kurbu kurku kuros kursk kuruk kurus kusuo kusur kuusk o-r-b oboro obrok offof ofosu ofour okkur okobo okoro okubo okuku okuru ooooo orbus orfor orkus orobo oroso orosu oruku oruro osfok ososo ossos ossur osusu ouoro ro-ro robbo robbs robo- robor robur rofor rokkk rokos roofs rooks rorbu rosko rosso rosss rosu rouko rsssf rubof rubor rubus ruffo ruffs rufo- rufus rukus rusko rusks rusor russo s-bus s-k-o s-o-r sbuks sfouf skoff skoko skoob skors skruk skurf skurr skuru so-so sobko sobor sokos sooks sooru sorbo sorbs sorok soror soros sorsk sorso sorsu sorus soss- sosus souff souks sours sous- sroof sssrb sssss subbu subos subss subuk suffr suffs sukko sukob sukru sukuk sukur surbo surfs sursk suruk surur surus susso susuk susus ubobo ufofu uforb ukobu urbos uroob uros urour urous ursuk ursus urubu us-ks usfor uskok usour uuork uuuuu

bbbbbb bobbos bobrok boffos bofors bokkos bokoro booboo bookof boorus borbor borkou boroko bororo borsuk bososo bossou boubou boukou bourou bousso boussu brokkr brooks brosso brubru brusor bubkus bububu buffos bukkur bukuru bukusu burbur burros buruku foboff foofoo foofur forros fosso fossor foufou fourof fourou frbroo fukuro furfur furors furour furrfu fusors koboko kofuku kokofu kokoku kokoro kokubo kokufu kookoo korfos korkor korkus kororo korubo koruru kossos kossou koubou kouffo koukou kouoro kouros kourou kousso krokos krokus kubus kuo-fu kuroko kursko kururu kuskos kuskus obfusk obroks obsorb oksoko ookroo oooooo orobus orrour ossous ououso ousrou robous robsof rofors rokkor rokuko rokuro rookus ruboff rubro- ruffus rufous rukkus russo- russus skruff sobos sokoro sokoru sokour soosoo sorbus soroko sorors sorous sorrus sorsor soukos sourou sousou srbsko sssfrs subfor subuku suburb sukkos sukkur sukoro suroso susurr suuksu ubussu uksubs urobos uskoks

bbbbbbb bobross bok-bok boo-boo boobook booboos bookbus boubous bourrou brokoff brokour brosour brousko burruss bus-obo fobsoff fokkusu foo-foo forsook fossors fou-fou furrour kobroor kokorou kor-kor korbous korkoro korosko kos-kos kossoff krosuru kuffour kus-kus off-off offbook oroboro robosub rub-off rubbour sorfors sosruko sou-sou soukous soursob sssssss subfusk subroof subsfor suburbs suursoo ububboo uskub usurous

bbbbbbbb bo-bo-bo bobobobs bofossou boobooks bourrous broubrou buruburu fosforus fourbour froufrou kobukuro kokborok kouskous koussour kukukuku kukuruku kuruburu kurukuru off-book oroborus rokkurro subroofs sussurus susurrus ubbubboo uroboros

borborbor forsbrook four-four frou-frou froufrous furfurous koukourou ouroboros ouroborus roof-boss sous-sous susurrous

bobbobbobs frou-frous fukubukuro kooskoosoo kouroukoro kukkurukuu soussoubro

koussourkou ouroroboros

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