b-r-k bbook bdoor bibbo bibio bibod bibri biddu bidor bidri biduk bidur bikok bikou bioko birdo birdu birou birur bo-bo bobbi bobik bobko bobok bobr bobri bodd- bodio bodir bodiu bodor bodri boiro bokko bokod bokok bokor booki booko boord booru borbo bordi bordo borid borik borio borko borku boro- borod borok boroo borou borro boudu bouko bourd bouri bridi briod briou brobo brodd brodo broid brood brook broud brouk brrrr brud- bruik bruiu bruri buddu budki budko budur buiki buird bukid bukk- bukki bukor buord burdi burio buroo burri burro burru burud buruk d-rod d-rok ddddd ddruk dibri diddu didio didok dioid dioro do-do dobki dobok dobri dobro dodoo dodro doido dokdo dokki dokri dokuo doodo dooku dorid dorio dorud doruk douro drbob dridu driki driko drobo droid drood drook drori drouk druid druri du-ku dubbi dubbo dubi dubki duddo dudki dudok dudou duduk dukku durio durok i-bid i-bod ibbur ibibo ibook ibrik ibuki idio- idodi idood idoru iiiii ikiru ikobo ikoro ikuko ikuri ikuro iodid iodo- ioooi ioooo iorio iouik irbid irid- irido iriki irobo iroko irori irour k-b-d k-rob kibbi kibbo kibi- kibor kiddo kiiki kikki kikko kikoi kikuo kikuu kioko kioku kirdi kirki kirui ko-ko kobri kobru kobuk kodir kodki kodok kodur koidu koiri kokir kokki kokko kokoi kokor kokou kokur koodi kooki koord koori kooru korbo korki korku koror korri korro koruk koubi koudi koudo kouki kouri kribi krodo krubi kruki kubik kubok kubri kudki kudou kudur kukko kukok kukri kukui kukur kuori kurbu kurdi kurik kurir kurki kurku kurud kuruk o-r-b obodo oboro obrok obudu oddur odibo odiid odori odour odudu oduro oidor oiko- okido okkur okobo okoki okoro okubo okuku okuru ooioo ooooo ordib ordro oribi oridb orobo orodo oruku oruro ouir- ouoro ribbi ribo- rikki rikuo ro-ro robbi robbo robik robo- robor robur rodbo roddi rodik rodok rodor rodri rokki rokkk roodi roodu rorbu rorid rorik rouko rubbi rubid rubik rubio rubor rudik rudki rudkk rudok ruiru rurik rurki u-dub ubirr ubobo uiro ukobu ukodo ukrid urdoi urduk uroob urour urubu ururi uuork uuuuu