bbbb bbdd bbdo bbwr bd-r bdii bibb bibi bibo bidi bido bidr bio- bioi birb bird biri biro birr biw- bobb bobi bobo bobw bodb bodi bodo boi- boid boii boob bood boor boow bor- bord bori boro borr borw bowd bowi bowr brdo brid brio brob brod broo bror brow brrr d-bo dddd dibb dibo didi dido diii dior dird dirr dobb dobi dod- dodd dodi dodo doid doob dood door dord dori doro dorr dowb dowd dowr drib drob drod drow dwbr dwdd dwi- dwid dwor dwrd dwrw dwww ibdo ibid ibrd ibri ibro iddo idid idio idir idro iiii iiio iioi iioo iiwi iobi iod- iodd iodo ioii ioio iooi iooo iori irdo iri- irid irio irob irod irri iwiw obbo obid oboi obor obri obro odbo oddd oddi odio odir odoo odor oido oiii oobi oodi ooid oooo oord orbb orbi orbo ordo ori- orid orio oro- oror orri orro orwo owir owow rbbb rbbr rdio rib- ribo ridd ridi rido riri riwo rob- robb robi robo rodd rodi rodo rodw roid roio roir roob rood rooi roor rori roro rowb rowd rowi rowr roww rrrr rwdi wbbb wbbd wbbi wbbo wbbr wbbw wbdr wbib wbio wbiw wbob wboi wbor wbow wbrb wbrd wbri wbrr wbrw wbwb wbwi wbwo wdbd wdbo wdbr wddd wddo wddw wdod wdor wdow wdrb wdrr wdwd wdwr wibb wibi wibr wibw widi widr widw wiii wiob wiod wioi wioo wirb wird wiri wiro wirr wiwi wobb wobo wodb wodd wodi woid woio woir woob wood woow worb word wori woro worr worw wowb wowi wowo woww wrbb wrbi wrbo wrbw wrdb wrdd wrdi wrdo wrdr wrdw wrob wrod wroi wroo wrow wrrb wrrd wrro wrrw wrwb wrwd wrwr wwbb wwbd wwbr wwdb wwdr wwdw wwib wwii wwio wwod wwor wwow wwrb wwrd wwrr wwrw wwwi wwwr wwww