bbbb bbng bbrg bgon bnor bnrr bobb bobo bogg bogo bong bonn bono boob boog boon boor bor- borg born boro borr brno brob brog bron broo bror brrr gbbo gbon gggg ggrn gnoo gnrr gobo gogo gon- gong gonn gono goog goon goor gorb gorg gorn goro gorr grbr grob grog gron groo gror grrr nbbo ngon ngor nngn nnnn nobo nogg nogo non- nong nonn nono noo- noob noon nooo noor nor- norb norg norn noro norr nron obbo obon obor obro ogb ogog ogon ogro ongo onno onon onor oooo orbb orbo orgn orgo orno oro- oron oror orro rbbb rbbr rnbr rob- robb robo rogg rogo rong rono roob roog roon roor roro rrrr