-ene c-cd cccc cccf cccu ccdc ccdf ccdn ccdr cced ccee ccfc ccfd ccff ccnc ccne ccnf ccnr ccnu ccrc ccre ccrf ccuc cd-e cd-r cddr cdec cdef cder cdfe cdnc cdnf cdre cec- cece cedd cede cedu ceec cef- cefc cefn cen- cend cene cer- cerc cerd cere cerf cern cfcf cfcn cffr cfnr cfre cfrn cfun cndd cnrc cnrr crcc crce crcr crdc cre- crec cred cree cren creu crfc crne crud crue crun cucc cuce cucn cude cued cuer cufc cuff cund cune curd cure curf curn curr dccc dccu dcfc dddd ddrc ddre dec- decc decd dece dedd dede dedu deed deef deen deer defe deff defn dene denn denu der- derc dere derf dern derr deue deur dfcc dfcu dfer dfrf dnce dner dnrc dred dree dref dren drfc drue druu duce dudd dude dudu duer dufc duff dufu dunc dune dunn dure durn duru duur eccc ecce ecdc ecdf eced ecef ecfc ecfr ecne ecrc ecrf ecrr ecru eddc edde ede- eden eder edfu edrn edru educ edun edur eede eedu eeee eefe eefn eend eerc efen ence end- ende endu ened enee ener ennc enne ennu enue enuf enur ercc erce erde erdf erec ered eren erer erfc erne errc erre eruc erur eucd eude euer eufc eur- eurc eure fccf fece fede fedn feed feen feer fefc fefe feff fend fene fenn ferc ferd fere fern ferr feru feud ffcc ffee ffff ffrr ffun fndd fndn fndr fnuf frcc frcn fred free fren frfc frue frun fuc- fudd fude fufc fuff fufu fund fune funf fur- fure furn furr nccc nccf nccn nccr nccu ncdc ncdn ncdr ncdu ncec nced ncee ncef ncen ncer ncfc ncfe ncnc ncnd ncrc ncre ncue ndcc ndde nder ndrc ndre ndrf necc nece necr nedc nedd nede nedu need neef neen neer nefd nefe neff nend nene nenu nerc nerd nere nerf nerr neru neuc neue neuf neun neur neuu nfcu nfdc nfer nfff nnnn nrdc nren nrfc nrrc nrrd nuce nucu nudc nudd nude nuee nuer nuff nunc nune nunn nurc nurd nure nurn nurr nuru rccc rcdc rcde rcfc rcnr rcrd rder recc recd rece recr recu redc redd rede redr redu reed reef reen refd refe reff refn refr refu rend rene renn renu rerd rere reru reue reuf reuu rfef rffc rndc rndf rred rrfc rrrr rrun ruce rudd rude rued ruen ruer rufc rufe ruff runc rund rune runf runn rurc rurd rure ruru ruud ruun ucdc ucdd ucrc uden uder udun uend ufcu ufer uffe uncc unce uncf unde unec uned unee unef unen uner unfd unne unrf urde urdu ure- ured urfe urff urne urre urun urur uuen uuuu