-hou bbbb bbdd bbdo bd-r bddh bhor bhur bhuu bobb bobo bobu bodb bodh bodo bodu bohd boho bohr bohu boko boku boob bood booh book boor bor- bord borh bork boro borr boru boud bouh bouk bour brdo brkb brob brod broh brok broo bror brou brrr brud bruh bubb bubo bubu budb budd budo budu buho buhr bukh bukk buko buku bur- burb burd burh burk buro burr buru d-bo dddd ddub dhod dhor dhur dobb dobu dod- dodd dodo dohr doko doob dood dook door dord dork doro dorr doru doub doud douk dour drob drod droh drou drub druk druu dub- dubb dubh dubu dudd dudo dudu duhr duhu duku duo- durk duro duru duur hdbk hdod hhhh hkbu hobo hodh hodk hodr hoho hoko hoku hood hook hoor hord hork horo horr houd houk hour hrob hrod hrud hubb hubo hudd hudo hudu huhu huor hurd hurk huro hurr huru huub kbbb kbbd kbbk kbbo kbbr kbbu kbdb kbdo kbdr kbhb kbhh kbhr kbkb kbkk kbko kbkr kbob kbod kbok kboo kbrb kbrd kbrh kbrk kbro kbru kbub kbud kbuk kbur kbuu kdbb kdbr kddb kddd kddk kddr kdkb kdkd kdkk kdko kdkr kdok kdrb kdro kdub kdur khbd khbr khdk khdr khhk khho khkk khkr khob khok khor khou khrd khrk khro khrr khub khud khuk khur kkbb kkbd kkbo kkbr kkdd kkdo kkhb kkhh kkhk kkhr kkkk kkob kkoh kkoo kkor kkrb kkrh kkrk kkro kkrr kkuu kobb kobk kobo kobr kobu kodk kodo kodu kohd kohh koho kohr kohu kokb kokh kokk koko kokr koku koob kook kooo koor koou korb kord kork koro korr koru koub kour kouu krbb krbd krbk krbr krdd krdo krdr krdu krkd krkh krkk krko krkr krku krob krod kroh krok kroo kror krrb krrk krro krrr kruh kruk krur kubb kubd kubo kubr kubu kudd kudo kudu kuhu kukh kukk kuku kuok kuoo kurb kurd kurk kuro kurr kuru kuub kuuk kuur kuuu obbo obkb obok obor obrh obro obuh odbo oddd odoh odoo odor odou odur ohho ohob ohoh ohok okko okok okor okro okur ooho ooku oooh oooo oord orbb orbo orbu ordo ordu orko oro- orok oror orro orub oudh our- ouro ouu- rbbb rbbr rboh rhob rhod rhoh rob- robb robo robu rodd rodo rohr rohu rokh rokk roko rokr roku roob rood rook roor rork roro roru roub roud rouh rouk rrrr rubb rubu rudd rudo ruhh ruhr rukh rukk ruku ruok rurd ruro ruru ruud ubbo ubod ubud udoh udoo uduk uh-d uhoh uhok uhuh ukko ukok ukur uor- urdu urho uro- urok uroo urrh uruk urur uuuu