bbbb bbng bbrg bgon bgun bnor bnrr bobb bobo bobu bogg bogo bogt bong bonn bono bont bonu boob boog boon boor boot bor- borg born boro borr bort boru botb botn boto bott boun bour bout brno brob brog bron broo bror brot brou brrr brug brun brut btob btor btrt bttb bubb bubo bubu bugg bugo bunb bung bunn buno bunt bunu buon bur- burb burg burn buro burr burt buru but- buto butt gbbo gbon ggbt gggg ggrn gnoo gnrr gobo gogo gon- gong gonn gono gonu goog goon goor goot gorb gorg gorn goro gorr gort goto gott gou- goug goun gour gout grbr grob grog gron groo gror grot grou grrr grub grug grun grur grut gtbr gubb gubu gugb gugg gugu gung gunn gunt gurb gurg gurn guro gurr gurt guru guto gutt gutu nbbo ngon ngor ngou ngtn ngur nguu nngn nnnn nnot nntn nobo nobu nogg nogo nogt non- nong nonn nono nont nonu noo- noob noon nooo noor noot nor- norb norg norn noro norr nort not- noto nott noun nour nout nron ntnu ntru ntto nttr nung nunn nuno nunt nuon nurn nurr nurt nuru nutt nutu obbo obon obor obot obro ogb ogog ogon ogou ogro ogun ongo ongu onno onon onor ont- onto onur onut oont oooo oort ootb orbb orbo orbu orgn orgo orno oro- oron oror orot orro orto orub oto- otog oton otoo otor otro otto ottu otur oun- oung our- ourn ouro ourt out- outb outo ouu- rbbb rbbr rgtr rnbr rnnt rnot rnut rob- robb robo robt robu rogg rogo rong rono ront roob roog roon roor root roro rort roru rotg rotn roto rotr rott roub roun rout rrrr rrun rubb rubu rugg rung runn runo runt ruro ruru ruto rutt rutu ruun tbrb tnut tobo tobt tobu togo togr togt tonb tong tonn tono tonu toon toor toot torg torn toro torr tort toru toto totr tott toug toun tour tout trng trno trog tron troo trot trou trtr trub trug trun trut truu ttbb tton tttt tubb tubo tubr tubu tugg tugu tunb tung tunn tuno tunu tuor turb turg turn turo turr turt turu tuto tutt tutu tuuo ubbo ubon uggo uggt ugro ugur uguu ungo ungu unno unon unro untb unto unut uor- urgu uro- uroo urun urur urut utor utto uttu utug uuno uuuu