koku koob koog kook kooo koor koou kora korb kore korg kork koro korr koru koua koub koue kour kouu krab krae krag krah krak krar krba krbb krbe krbg krbk krbr krea kreb kree kreh krek kreo kreu krka krke krkh krkk krko krkr krku kroa krob kroe krog kroh krok kroo kror krrb krre krrg krrk krro krrr krua krue krug kruh kruk krur kuah kuar kuau kuba kubb kube kubo kubr kubu kuek kueu kuga kugb kuge kugo kugr kuhu kuka kuke kukh kukk kuku kuoa kuok kuoo kura kurb kure kurk kuro kurr kuru kuub kuuk kuur kuuu o-eo oaau oaer oahe oahu oake oara oare obak obba obbo obea ober obkb oboe obok obor obra obre obrh obro obuh oegb oera oere ogae ogar ogb ogba ogbe ogea ogee oger ogge ogoa ogog ogou ogra ogre ogro ohau ohba ohbe ohee oher ohgr ohho ohob ohoh ohok ohra ohre okak okeh oker okgo okha okka okko okok okor okra okre okro okur ooaa ooak ooba oobe ooer ooha ooho ooku oooh oooo oora oore orab orae orah orak orao orar orba orbb orbe orbo orbu ore- orea oreb oreg oreh orek oreo orer orga orge orgo orhe orka orke orko oro- oroe orok oror orra orro orub ouea ouer ouge ough our- oura oure ouro ouu- raab raag raak raba rabb rabe rabk rabo rabu raeg raer raga rage ragg ragh rago ragu raha rahe rahr rahu raka rake rakk raku raob raoh raok rara rarb rare rark raro raua raub raue rauk rbbb rbbr rbgh rboh rea- reae reak reao rear reau reba rebb rebe rebk rebo rebu reeb reek rega rege rego regr regu reha rehb rehe reka reke reko reog reou rera rere rerg rero reru reue reuk reuu rgba rgbe rhae rhag rhau rhbg rhea rheb rhee rheo rhoa rhob rhog rhoh rhue rhug roab roag roak roar rob- roba robb robe robo robu roea roeg roer roga roge rogg rogh rogo roha rohe rohr rohu roka roke rokh rokk roko rokr roku roob roog rook roor rora rore rork roro roru roua roub roue rouh rouk rrah rrrr ruag ruah ruba rubb rube rubu ruer ruga ruge rugg rugh ruhe ruhh ruhr ruka ruke rukh rukk ruku ruok rura rure ruro ruru uaru uaua ubar ubba ubbe ubbo ubek uber ubra ueba ugab ugao ugar ugeo uggo ughe ugra ugro ugur uguu uher uhoh uhok uhuh ukba ukek ukeu ukha ukko ukok ukra ukur uoke uor- uore urao urau urba urbe ure- urea ureh urga urge urgh urgu urho urka urke uro- uroa urok uroo urra urre urrh uruk urur uuuu