b-u bbb bbg bbk bbn bbo bbr bbu bgb bgg bgk bgn bgo bgr bgu bkb bkg bkk bkn bko bkr bnb bng bnk bnn bno bnr bnu bob bog bok bon boo bor bou brb brg brk brn bro brr bru bub bug buk bun buo bur buu gbg gbk gbn gbo gbr gbu ggb ggg ggn ggo ggr ggu gkb gkn gko gnb gnn gno gnr gnu gob gog gok gon goo gor gou grb grg grk grn gro grr gru gu- gub gug guk gun guo gur guu kbb kbk kbn kbo kbr kbu kgb kgo kgu kkb kkk kkn kkr kku kn- kng knk knn kno knr knu kob kog kok kon koo kor kou krg krk krn kro krr kru kub kug kuk kun kur kuu nbb nbg nbk nbn nbo nbr nbu ngb ngg ngk ngn ngo ngu nkk nkn nko nkr nku nnb nng nnk nnn nno nnu no- nob nog nok non noo nor nou nrb nrg nrk nrn nro nrr nru nub nug nuk nun nuo nur nuu ob- obb obg obk obn obo obr obu ogg ogn ogo okb okg okk oko okr oku on- onb ong onk onn ono onr onu oo- oob oog ook oon ooo oor or- orb org ork orn oro orr oru ou- ouk oun ouo our rbb rbg rbk rbn rbo rbr rbu rgb rgg rgk rgn rgo rgr rkb rkg rkk rko rku rnb rng rnn rno rnr rnu rob rog rok ron roo ror rou rrb rrg rrk rrn rrr rru rub rug ruk run ruo rur ruu ubb ubg ubk ubn ubo ubr ubu ugb ugg ugk ugn ugo ugr ugu ukb ukk ukn ukr uku un- unb ung unk unn uno unr unu uob uog uok uon uoo uor ur- urb urg urk urn uro urr uru uug uun uur uuu

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

b-r-k bbgun bbook bkorn bo-bo bobko bobok bobr bogno bogon bogor bogu bogur bokko bokok bokor bokun bongo bongu bonon bonou booko boong boonk boorn booru borbo borgo borgu borko borku born- borno bornu boro- borok boron boroo borou borro borun bouko boung bourg bourn brobo brong bronk bronn brook broon brouk broun brrrr brugg brung brunk brunn bruno bruun bubon bugno bugok bugoo bugun bukk- buknu bukor bungo bungu bunko bunuk bunun buono burgk burgo burgu burn- buron buroo burro burru buruk burun gboko gnugo go-go go-on go-oo gobbo gogok gogon gogro gongo gonnn gonno gono- goobo goong gorgo gorno gorun goung gounn grgur grogg grokk grong gronk grono grook groon groun grrrr grubb grunk gubbo gubno gubru gukgo gungu gunnr gurko guroo gurro gurun gurur k-gun k-rob knokk knork knorr knurr ko-ko kobru kobuk kobun kogon kogro kogun kokko kokor kokou kokur konbu kongo kongu konno konnu konro konur koogu koonu koorn kooru korbo korgu korku korng korno koron koror korro koruk korun kouno krnuo kronk kroon kroun krunk kruun kubok kugur kukko kukok kukur kungu kunku kunur kurbu kurgo kurku kuruk ngoko ngong ngoro ngugu nguru nkubu nnooo no-go no-no nobob nobuo nokko nokon