c-cd cccc cccu ccdc ccdr cced ccee ccoc ccod ccrc ccre ccuc cd-e cd-r cddr cdec cder cdre cec- cece ceco cedd cede cedo cedu ceec ceke ceor ceou cer- cerc cerd cere cero ckck ckco ckdo ckdu cker ckoc ckoo ckor ckrc ckrd coce cock coco cocu codd code coed cok- coke coko cood cook cor- corc cord core cork coro corr coud coue couk cour crcc crce crcr crdc cre- crec cred cree creo creu crkc croc crod croe crok croo cror crud crue cruk cucc cuce cuck cude cued cuek cuer cuk- cuke curd cure curo curr dccc dccu dcrk dddd ddoc ddrc ddre dec- decc decd dece deck deco dedd dede dedo dedu deed deek deer dek- deke deor der- derc dere derk dero derr deue deuk deur dkdc doce dock doco docu dod- dodd dode dodo doek doer doke doko dood dook door dorc dord dore dork doro dorr doru douc doud doue douk dour dred dree drek drod drou drue druk druu duce duck duco dudd dude dudo dudu duer duke duku duo- dure durk duro duru duur eccc ecce ecco ecdc eced ecko eco- ecod ecou ecrc ecrr ecru eddc edde eddo ede- eder edoc edod edou edru educ edur eede eedu eeee eeke eeoc eerc eero ekco eked ekek eker ekur eocd eode eore ercc erce erde erec ered erer erke eroc erod eroe eroo errc erre erro eruc erur eucd eude euer eur- eurc eure euro kccc kccd kcck kccr kccu kcdc kcdd kcdr kcdu kcec kced kcee kceo kceu kckc kckk kcko kckr kcoe kcor kcou kcrc kcro kcrr kcru kcue kcuk kdcc kdcd kdce kdco kdcr kddc kddd kddk kddr kdec kdkd kdkk kdko kdkr kdoc kdoe kdok kdro kduc kdur keck keco kecr kedc kedd kede kedo kedr keed keek keer kekc keke keko keku keok ker- kerc kere kerk kero kerr keru keur kkcd kkck kkco kkcr kkdc kkdd kkdo kked kkkk kkoo kkor kkrc kkre kkrk kkro kkrr kkuu kocd kock kode kodk kodo kodu koed kokc koke kokk koko kokr koku kooc kook kooo koor koou korc kord kore kork koro korr koru koue kour kouu krcc krcd krce krco krcu krdc krdd krde krdo krdr krdu krec kred kree krek kreo kreu krkc krkd krke krkk krko krkr krku kroc krod kroe krok kroo kror krrc krre krrk krro krrr kruc krue kruk krur kucc kucd kuce kuco kucr kudd kude kudo kudu kued kuek kueu kuke kukk kuku kuok kuoo kurd kure kurk kuro kurr kuru kuuk kuur kuuu o-eo occc oce oced ocee ocke ocre ocro ocrr ocur oddd oded odeo oder odoo odor odou odur oec- oecc oedo oeec oere okcu oked oker okko okok okor okre okro okur oocr ooer ooku oooo oord oore orce orco orde ordo ordu ore- orec ored orek oreo orer orke orko oro- oroe orok oror orro oucc oudc oude oued ouer our- oure ouro ouu- rccc rcdc rcde rcrd rder rdoc recc recd rece reck recr recu redc redd rede redo redr redu reed reek reke reko reod reou rerd rere rero reru reue reuk reuu rocc roce rock roco rodd rode rodo roed roer roke rokk roko rokr roku rood rook roor rorc rore rork roro roru roud roue rouk rred rrrr ruce ruck rudd rude rudo rued ruer ruke rukk ruku ruok rurc rurd rure ruro ruru ruud ucdc ucdd ucrc uder udoo uduk ukcc ukek ukeu ukko ukok ukrc ukur uocc uoke uor- uore urde urdu ure- ured urke uro- urok uroo urre uruk urur uuoc uuuu