bbbb bbgm bbmg bbrg bibb bibi bibo bigb bigg bigo bimo bio- biog bioi birb birg biri biro birr bmir bmmi bobb bobi bobo bogg bogi bogo boi- boii boim bomb bomi boob boog boom boor bor- borg bori borm boro borr brig brim brio brob brog brom broo bror brrm brrr gbbo gggg gibb gigg gigi gigo gimo giog gioi girg giri giro girr gmmr gobi gobo gogi gogo gomb gomi gomo goog gooi goom goor gorb gorg gori gorm goro gorr grbr grib grig grim grob grog groi grom groo gror grrr i-go ibbm ibim ibri ibro igbo igoo igor igri iiii iiio iioi iioo imbi imir immi immo imri imro imrr iobi ioii ioio iomo iooi iooo iorg iori irbm irgm iri- irig irio irmo irob irri mbim mbio mgrm migg migi migo miii miio mim- mimi mimo mio- mirg miri miro mirr mmii mmmm mmor mobb mobi mobo mogg mogi mogo moii moio moir momi momo moob moog moor morb morg mori moro mrbb mrbm obbo oboi obor obri obro ogb oggi ogog ogoi ogri ogro oigo oiii oimb ombo omim omio omo- omoi omoo omor omri omro oobi oooo orbb orbi orbo orgo ori- orig orio ormo oro- orom oror orri orro rbbb rbbr rgbi rib- ribo rigg rigi rigo rimi rimm rimo riom riri rmrg rob- robb robi robo rogg rogi rogo roig roio roir romb romi romm romo roob roog rooi room roor rori roro rrrr