-hou dddd ddot dhod dhor dhur dod- dodd dodo dohr doko dood dook door doot dord dork doro dorr dort doru dotd doth dotk doto dott doud douk dour dout drod droh drot drou druk drut druu dthd dtor dtot dudd dudo dudu duhr duhu dukt duku duo- durk duro durt duru duur duut hdod hdtt hhhh hodh hodk hodr hoho hoko hoku hood hook hoor hoot hord hork horo horr hort hotd hoth hoto hotr hott hotu houd houk hour hout hrod hrud htoh htrk httr hudd hudo hudu huhu huor huot hurd hurk huro hurr hurt huru huth huto hutt hutu kddd kddk kddr kdht kdkd kdkk kdko kdkr kdkt kdok kdot kdro kdtd kdth kdtr kdur kdut khdk khdr khhk khho khkk khkr khok khor khot khou khrd khrk khro khrr khrt khth khtk khto khtr khtt khud khuk khur khut kkdd kkdo kkdt kkhh kkhk kkhr kkkk kkoh kkoo kkor kkot kkrh kkrk kkro kkrr kkrt kktk kktu kkut kkuu kodk kodo kodt kodu kohd kohh koho kohr koht kohu kokh kokk koko kokr koku kook kooo koor koot koou kord kork koro korr kort koru kotd koth kotk koto kotr kott kotu kour kout kouu krdd krdo krdr krdu krkd krkh krkk krko krkr krku krod kroh krok kroo kror krrk krro krrr krrt krth krtk krto krtr kruh kruk krur ktdd ktdk ktdo ktdr kthh kthk ktho kthr ktht kthu ktkk ktko ktkr ktkt ktku ktoh ktok ktoo ktor ktot ktrh ktrk ktro ktrr ktrt ktru ktth kttk ktto kttr kttt kttu ktuh kudd kudo kudu kuht kuhu kukh kukk kuku kuok kuoo kurd kurk kuro kurr kurt kuru kuth kuto kutr kutt kutu kuuk kuur kuuu oddd odoh odoo odor odot odou odtu odur ohho ohoh ohok ohto ohtu okko okok okor okot okro okto okur ooho ooku oooh oooo oord oort ordo ordu orko oro- orok oror orot orro orth orto otho othr oto- otoh otok otoo otor otro otto ottu otur oudh our- ouro ourt out- outh outo ouu- rhod rhoh rodd rodo rohr rohu rokh rokk roko rokr roku rood rook roor root rork roro rort roru roth rotk roto rotr rott roud rouh rouk rout rrrr rtdt rthk rudd rudo ruhh ruhr rukh rukk ruku ruok rurd ruro ruru ruth ruto rutt rutu ruud tdkr tdor thdr thoo thor thot thou thro thru thtr thud thuk thur tkod todd todo todt todu toho tohu toko toku tood tooh took toor toot tord tork toro torr tort toru totd toth toto totr tott touh touk tour tout trod troo trot trou trtr trud truk trut truu tttt tudu tuht tuhu tuko tuor turd turk turo turr turt turu tuto tutt tutu tuuo udoh udoo udot uduk uh-d uhoh uhok uhuh ukko ukok ukur uor- urdu urho uro- urok uroo urrh urth uruk urur urut utor utto uttu uuuu