bbbb bbng bbrg bgon bgun bnor bnrr bobb bobo bobu bogg bogo bokn boko boku bong bonk bonn bono bonu boob boog book boon boor bor- borg bork born boro borr boru bouk boun bour brkb brno brob brog brok bron broo bror brou brrr brug brun bubb bubo bubu bugg bugo bukk buko buku bunb bung bunk bunn buno bunu buon bur- burb burg burk burn buro burr buru gbbo gbon gggg ggrn gnoo gnrr gobo gogo goku gon- gong gonk gonn gono gonu goog gook goon goor gorb gorg gorn goro gorr gou- goug gouk goun gour grbr grob grog grok gron groo gror grou grrr grub grug grun grur gubb gubu gugb gugg gugu gung gunk gunn gurb gurg gurk gurn guro gurr guru kbbb kbbg kbbk kbbo kbbr kbbu kbgb kbgg kbgn kbgo kbgr kbkb kbkg kbkk kbko kbkr kbng kbnn kbno kbnr kbnu kbob kbok kbon kboo kbrb kbrg kbrk kbrn kbro kbru kbub kbuk kbun kbur kbuu kgbb kgbn kgbr kggg kggo kggr kgnb kgng kgno kgnr kgnu kgon kgor kgou kgrb kgrg kgrk kgrn kgro kgrr kkbb kkbg kkbn kkbo kkbr kkgb kkgo kkgr kkkk kknb kknn kkno kknu kkob kkon kkoo kkor kkrb kkrk kkrn kkro kkrr kkuu knbb knbn knbr knbu kngn kngr knkk knnb knng knnk knnr knob knog knok knon knor knou knrb knrg knrk knro knub knuk knur kobb kobk kobn kobo kobr kobu kogb kogg kogn kogo kogu kokb kokk kokn koko kokr koku kong konk kono koob koog kook koon kooo koor koou korb korg kork korn koro korr koru koub kour kouu krbb krbg krbk krbr krgn krkk krkn krko krkr krku krnb krng krnk krnn krno krnu krob krog krok kroo kror krrb krrg krrk krrn krro krrr krug kruk krun krur kubb kubo kubr kubu kugb kugn kugo kugr kukk kukn kuku kung kunk kuno kunr kunu kuok kuon kuoo kurb kurk kuro kurr kuru kuub kuuk kuur kuuu nbbo ngon ngor ngou ngur nguu nkgb nkok nkor nngn nnnn nobo nobu nogg nogo noko non- nong nonn nono nonu noo- noob nook noon nooo noor nor- norb norg nork norn noro norr noun nour nron nubk nuku nung nunk nunn nuno nuon nurn nurr nuru nuuk obbo obkb obok obon obor obro ogb ogog ogon ogou ogro ogun okgo okko okno okok okon okor okro okun okur ongo ongu onno onon onor onur ooku oooo orbb orbo orbu orgn orgo orko orno oro- orok oron oror orro orub oun- oung our- ourn ouro ouu- rbbb rbbr rnbr rob- robb robo robu rogg rogo rokk roko rokr roku rong ronk rono roob roog rook roon roor rork roro roru roub rouk roun rrrr rrun rubb rubu rugg rukk rukn ruku rung runk runn runo ruok ruro ruru ruun ubbo ubon uggo ugro ugur uguu ukko ukok ukon ukur ungo ungu unkn unko unno unon unro uor- urgu uro- urok uroo uruk urun urur uuno uuuu