-hou cccc cccu cccv cchr ccoc ccrc ccuc ccvo chch choc choh chok choo chor chou chov chrc chro chrr chuk chur chvo ckch ckck ckco ckcv ckhv ckoc ckoo ckor ckrc ckvo coch cock coco cocu coho cok- coko cooh cook cor- corc cork coro corr couk cour covo crcc crcr crkc croc croh crok croo cror cruk cucc cuck cuk- curo curr cvcc cvrr hccc hcch hhhh hkcc hoch hock hocr hoho hoko hoku hook hoor horc hork horo horr houk hour hovk hrrc huch huck hucu huhu huor hurk huro hurr huru hvcc kccc kcck kccr kccu kccv kchh kchk kcho kchr kchu kckc kckk kcko kckr kckv kcoh kcor kcou kcrc kcrh kcro kcrr kcru kcrv kcuh kcuk kcvh kcvk kcvo kcvr kcvu kcvv khcc khch khck khcv khhk khho khkk khkr khkv khoc khok khor khou khrk khro khrr khrv khuk khur khvh kkch kkck kkco kkcr kkhh kkhk kkhr kkkk kkoh kkoo kkor kkov kkrc kkrh kkrk kkro kkrr kkrv kkuu kkvr kkvu kkvv koch kock kohh koho kohr kohu kokc kokh kokk koko kokr koku kooc kook kooo koor koou koov korc kork koro korr koru korv kour kouu kovc kovk kovo kovr krcc krch krco krcu krhc krhv krkc krkh krkk krko krkr krku krkv kroc kroh krok kroo kror krov krrc krrk krro krrr kruc kruh kruk krur krvc krvk krvo krvr krvv kucc kuch kuco kucr kucv kuhu kukh kukk kuku kuok kuoo kurk kuro kurr kuru kurv kuuk kuur kuuu kuvo kuvr kvcc kvch kvck kvco kvcr kvcu kvcv kvoc kvoh kvok kvoo kvor kvou kvov kvrc kvrh kvro kvrr kvrv kvuu kvvr kvvv 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 orvr oucc ouch our- ouro ouu- ovo- ovoo rccc rcuv rcvr rhoc rhoh rocc roch rock roco rohr rohu rokh rokk roko rokr roku rook roor rorc rork roro roru rouh rouk rovo rrrr ruch ruck ruhh ruhr rukh rukk ruku ruok rurc ruro ruru ruvu rv-c rvvh ucho ucrc uhoh uhok uhuh ukcc ukko ukok ukrc ukur uocc uor- uovo urch urho uro- urok uroo urrh uruk urur uuoc uuuu uv-c uvok uvvu vhhh vkor voho vohu vooc voor vor- voro voru vouh vouk vour vovk vroc vruk vuco vuku vvvv