bbbb bbng bbrg bgon bnor bnrr bobb bobo bogg bogo bogt bong bonn bono bont boob boog boon boor boot bor- borg born boro borr bort botb botn boto bott brno brob brog bron broo bror brot brrr btob btor btrt bttb gbbo gbon ggbt gggg ggrn gnoo gnrr gobo gogo gon- gong gonn gono goog goon goor goot gorb gorg gorn goro gorr gort goto gott grbr grob grog gron groo gror grot grrr gtbr nbbo ngon ngor ngtn nngn nnnn nnot nntn nobo nogg nogo nogt non- nong nonn nono nont noo- noob noon nooo noor noot nor- norb norg norn noro norr nort not- noto nott nron ntto nttr obbo obon obor obot obro ogb ogog ogon ogro ongo onno onon onor ont- onto oont oooo oort ootb orbb orbo orgn orgo orno oro- oron oror orot orro orto oto- otog oton otoo otor otro otto rbbb rbbr rgtr rnbr rnnt rnot rob- robb robo robt rogg rogo rong rono ront roob roog roon roor root roro rort rotg rotn roto rotr rott rrrr tbrb tobo tobt togo togr togt tonb tong tonn tono toon toor toot torg torn toro torr tort toto totr tott trng trno trog tron troo trot trtr ttbb tton tttt