c-cd cccc ccdc ccdr cced ccee ccoc ccod ccrc ccre cd-e cd-r cddr cdec cder cdex cdre cec- cece ceco cedd cede cedo ceec ceke ceor cer- cerc cerd cere cero cexe ckck ckco ckcx ckdo cker ckoc ckoo ckor ckrc ckrd coce cock coco codd code coed coex cok- coke coko cood cook cor- corc cord core cork coro corr coxe crcc crce crcr crdc cre- crec cred cree creo crex crkc croc crod croe crok croo cror cxro cxxx dccc dcrk dcxx dddd ddoc ddrc ddre dec- decc decd dece deck deco dedd dede dedo deed deek deer dek- deke deor der- derc dere derk dero derr dex- dexe dkdc do-x doce dock doco dod- dodd dode dodo doek doer doke doko dood dook door dorc dord dore dork doro dorr dred dree drek drod dxcc dxck dxco dxdc dxdr dxec dxed dxkr dxkx dxoc dxrd dxre dxrk dxrr dxrx dxxr dxxx eccc ecce ecco ecdc eced ecko eco- ecod ecrc ecrr eddc edde eddo ede- eder edex edoc edod eede eeee eeke eeoc eerc eero ekco eked ekek eker eocd eode eore er-x ercc erce erde erec ered erer erke eroc erod eroe eroo errc erre erro exco exec exed exer exo- exod exor exrx kc-x kccc kccd kcck kccr kcdc kcdd kcdr kcdx kcec kced kcee kceo kckc kckk kcko kckr kckx kcoe kcor kcox kcrc kcro kcrr kcrx kcxr kdcc kdcd kdce kdco kdcr kddc kddd kddk kddr kddx kdec kdex kdkd kdkk kdko kdkr kdoc kdoe kdok kdox kdro kdrx kdxe kdxx keck keco kecr kedc kedd kede kedo kedr keed keek keer kekc keke keko keok ker- kerc kere kerk kero kerr kerx kexo kexx kkcd kkck kkco kkcr kkdc kkdd kkdo kked kkex kkkk kkoo kkor kkrc kkre kkrk kkro kkrr kkrx kkxk kkxx kocd kock kode kodk kodo koed kokc koke kokk koko kokr kokx kooc kook kooo koor korc kord kore kork koro korr koxc koxe koxr krcc krcd krce krco krdc krdd krde krdo krdr krdx krec kred kree krek kreo krex krkc krkd krke krkk krko krkr krkx kroc krod kroe krok kroo kror krox krrc krre krrk krro krrr krrx krxk krxo krxr krxx kxdc kxdd kxdr kxed kxeo kxex kxkc kxkk kxkx kxok kxoo kxor kxox kxrc kxre kxrk kxro kxrr kxrx kxxe kxxk kxxo kxxr kxxx o-eo occc oce oced ocee ocke ocre ocro ocrr oddd oded odeo oder odex 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 orex orke orko oro- oroe orok oror orro oxer oxo- oxox oxxo rccc rcdc rcde rcrd rder rdoc recc recd rece reck recr redc redd rede redo redr redx reed reek reke reko reod rerd rere rero rexx rocc roce rock roco rodd rode rodo roed roer roke rokk roko rokr rood rook roor roox rorc rore rork roro roxo rred rrrr x-ed xdcc xeer xeko xer- xero xexe xkcd xoco xoro xoxo xrcd xrod xxxo xxxx