bbbb bbdd bbdo bbrg bd-r bdii bdog bibb bibi bibo bidi bido bidr bigb bigd bigg bigo bio- biog bioi birb bird birg biri biro birr bobb bobi bobo bodb bodi bodo bogd bogg bogi bogo boi- boid boii boob bood boog boor bor- bord borg bori boro borr brdo brid brig brio brob brod brog broo bror brrr d-bo dddd dibb dibo didi dido digg digi digo diii dior dird dirr dobb dobi dod- dodd dodg dodi dodo dog- dogg dogi dogo doid doig doob dood door dord dori doro dorr drib drob drod drog gbbo gddb gdor gggg gibb gidd gidi gido gigg gigi gigo giog gioi gird girg giri giro girr gobi gobo godi godo gogi gogo good goog gooi goor gorb gord gorg gori goro gorr grbr grib grid grig grob grod grog groi groo gror grrr i-go ibdo ibid ibrd ibri ibro iddo idgo idid idig idio idir idog idro igbo igoo igor igri iiii iiio iioi iioo iobi iod- iodd iodo ioii ioio iooi iooo iorg iori irdo iri- irid irig irio irob irod irri obbo obid oboi obor obri obro odbo oddd oddi odio odir odoo odor ogb oggi ogod ogog ogoi ogri ogro oido oigo oiii oobi oodi ooid oooo oord orbb orbi orbo ordo orgo ori- orid orig orio oro- oror orri orro rbbb rbbr rdio rgbi rib- ribo ridd ridi rido rigg rigi rigo riri rob- robb robi robo rodd rodi rodo rogg rogi rogo roid roig roio roir roob rood roog rooi roor rori roro rrrr