-hou cccc cccu cchr ccoc ccrc ccuc chch choc choh chok choo chor chou chrc chro chrr chuk chur ckch ckck ckco ckoc ckoo ckor ckrc coch cock coco cocu coho cok- coko cooh cook cor- corc cork coro corr couk cour crcc crcr crkc croc croh crok croo cror cruk cucc cuck cuk- curo curr hccc hcch hhhh hkcc hoch hock hocr hoho hoko hoku hook hoor horc hork horo horr houk hour hrrc huch huck hucu huhu huor hurk huro hurr huru kccc kcck kccr kccu kchh kchk kcho kchr kchu kckc kckk kcko kckr kcoh kcor kcou kcrc kcrh kcro kcrr kcru kcuh kcuk khcc khch khck khhk khho khkk khkr khoc khok khor khou khrk khro khrr khuk khur kkch kkck kkco kkcr kkhh kkhk kkhr kkkk kkoh kkoo kkor kkrc kkrh kkrk kkro kkrr kkuu koch kock kohh koho kohr kohu kokc kokh kokk koko kokr koku kooc kook kooo koor koou korc kork koro korr koru kour kouu krcc krch krco krcu krhc krkc krkh krkk krko krkr krku kroc kroh krok kroo kror krrc krrk krro krrr kruc kruh kruk krur kucc kuch kuco kucr kuhu kukh kukk kuku kuok kuoo kurk kuro kurr kuru kuuk kuur kuuu occc ocro ocrr ocur ohcc ohho ohoh ohok okcu okko okok okor okro okur oocr ooho ooku oooh oooo orch orco orko oro- orok oror orro oucc ouch our- ouro ouu- rccc rhoc rhoh rocc roch rock roco rohr rohu rokh rokk roko rokr roku rook roor rorc rork roro roru rouh rouk rrrr ruch ruck ruhh ruhr rukh rukk ruku ruok rurc ruro ruru ucho ucrc uhoh uhok uhuh ukcc ukko ukok ukrc ukur uocc uor- urch urho uro- urok uroo urrh uruk urur uuoc uuuu