bbbb bbrg bibb bibi bibo bigb bigg bigo biji bio- biog bioi birb birg biri biro birr bobb bobi bobo bogg bogi bogo boi- boii boji bojo boob boog boor bor- borg bori borj boro borr brig brio brob brog broo bror brrr g-jo gbbo gggg gibb gigg gigi gigo giog gioi girg giri giro girr gjig gobi gobo gogi gogo gojg goji gojo goog gooi goor gorb gorg gori goro gorr grbr grib grig grob grog groi groo gror grrr i-go ibri ibro igbo igoo igor igri iiii iiio iioi iioo ijji iobi ioii ioio iooi iooo iorg iori iri- irig irio irob irri j-ro jbig jbob jibb jibi jigg jigo jiji jirg jiri jiro jobo jogg jogi joio joji jojo joor jorg joro jrbr obbo oboi obor obri obro ogb oggi ogog ogoi ogri ogro oigo oiii oobi ooij ooji oooo orbb orbi orbo orgo ori- orig orio orji oro- oror orri orro rbbb rbbr rgbi rib- ribo rigg rigi rigo riji rijo riri rob- robb robi robo rogg rogi rogo roig roio roir roji rojo roob roog rooi roor rori roro rrrr