c-cd cccc cccv ccdc ccdr cced ccee ccoc ccod ccrc ccre ccvo cd-e cd-r cddr cdec cder cdre cdvd cec- cece ceco cedd cede cedo ceec ceke ceor cer- cerc cerd cere cero cevo ckck ckco ckcv ckdo cker ckoc ckoo ckor ckrc ckrd ckvo coce cock coco codd code coed cok- coke coko cood cook cor- corc cord core cork coro corr cove covo crcc crce crcr crdc cre- crec cred cree creo crkc croc crod croe crok croo cror cvcc cver cvrd cvrr dccc dccv dcrk dcvd dddd ddoc ddrc ddre dec- decc decd dece deck deco dedd dede dedo deed deek deer deev dek- deke deor der- derc dere derk dero derr derv deve devo dkdc doce dock doco dod- dodd dode dodo doek doer doke doko dood dook door dorc dord dore dork doro dorr dove dred dree drek drev drod dvdr dvor eccc ecce ecco ecdc eced ecko eco- ecod ecrc ecrr ecrv eddc edde eddo ede- eder edoc edod edve eede eeee eeke eeoc eerc eero ekco eked ekek eker eocd eode eore ercc erce erde erec ered erer erev erke eroc erod eroe eroo errc erre erro erve ever evoe evoo evre evvk kccc kccd kcck kccr kccv kcdc kcdd kcdr kcdv kcec kced kcee kceo kckc kckk kcko kckr kckv kcoe kcor kcrc kcro kcrr kcrv kcvd kcvk kcvo kcvr kcvv kdcc kdcd kdce kdco kdcr kddc kddd kddk kddr kdec kdkd kdkk kdko kdkr kdoc kdoe kdok kdov kdro kdrv kdvr kdvv keck keco kecr kedc kedd kede kedo kedr keed keek keer kekc keke keko keok ker- kerc kere kerk kero kerr kerv keve kkcd kkck kkco kkcr kkdc kkdd kkdo kkdv kked kkkk kkoo kkor kkov kkrc kkre kkrk kkro kkrr kkrv kkvr kkvv kocd kock kode kodk kodo kodv koed kokc koke kokk koko kokr kooc kook kooo koor koov korc kord kore kork koro korr korv kovc kove kovk kovo kovr krcc krcd krce krco krdc krdd krde krdo krdr krec kred kree krek kreo krev krkc krkd krke krkk krko krkr krkv kroc krod kroe krok kroo kror krov krrc krre krrk krro krrr krvc krve krvk krvo krvr krvv kvcc kvce kvck kvco kvcr kvcv kvec kver kvoc kvod kvoe kvok kvoo kvor kvov kvrc kvre kvro kvrr kvrv kvvr kvvv o-eo occc oce oced ocee ocke ocre ocro ocrr oddd oded odeo oder odoo odor oec- oecc oedo oeec oere oked oker okko okok okor okre okro oocr ooer oooo oord oore orce orco orde ordo ore- orec ored orek oreo orer orke orko oro- oroe orok oror orro orve orvr ovde ovee over ovo- ovod ovoo ovre rccc rcdc rcde rcrd rcvr rder rdev rdoc recc recd rece reck recr redc redd rede redo redr reed reek reev reke reko reod rerd rere rero revd reve revo rocc roce rock roco rodd rode rodo roed roer roev roke rokk roko rokr rood rook roor rorc rore rork roro rove rovo rred rrrr rv-c rved rver vdcc vdec vder vdre vecc veck vedc vede vedo veer veke veor ver- verd vere verk vero veve vevo vkor voce vode vodo voer voke vooc voor vor- vord vore voro vovk vred vreo vroc vver vvvv