-ene c-cd cccc cccs cccu ccdc ccdn ccdr ccds cced ccee ccnc ccne ccnr ccns ccnu ccrc ccre ccrs ccsd ccsn ccss ccuc ccus cd-e cd-r cdcs cddr cdec cder cdes cdex cdnc cdre cdrs cdss cec- cece cecs cedd cede cedu ceec cees cen- cend cene cens cer- cerc cerd cere cern cers cesc cese cesr cess ceux cexe cndd cnes cnex cnrc cnrr cnss crcc crce crcr crdc cre- crec cred cree cren cres creu crex crne crns crss crud crue crun crus crux cscc cscd csce cscr cscs csdn csdr csec csee cser csne csrc csrd csrs cssd csse cssr csur csus cucc cuce cucn cude cuds cued cuer cues cund cune curd cure curn curr curs cusd cuss cusu cxxx dccc dccs dccu dcds dcns dcsc dcss dcxx dddd ddes ddrc ddre ddss dec- decc decd dece decs dedd dede dedu deed deen deer dees dene denn dens denu der- derc dere dern derr ders des- desc dese dess desu deue deur deus deux dex- dexe dnce dncs dner dnrc dnsc dnus dred dree dren dres drrs drue drus druu dscc dscn dscr dscs dsdr dsrc dsrr dssc dssn duce ducs dudd dude duds dudu duer dues dunc dune dunn duns dure durn duru duse duur dxcc dxdc dxdr dxds dxec dxed dxes dxnd dxns dxnu dxrd dxre dxrr dxrx dxss dxue dxur dxxr dxxx eccc ecce ecdc eced eces ecne ecrc ecrr ecru ecsc ecse ecss ecsu ecus eddc edde edds ede- eden eder edes edex edns edrn edru edss educ edun edur eecs eede eedu eeee eees eend eens eerc eers eese ence encs end- ende ends endu ened enee ener enes ennc enne enns ennu enrs ense ensu enue enur enus er-x ercc erce erde erds erec ered eren erer eres erne erns errc erre errs erse eruc erur erus esce escr escs escu esds esdu esdx esee esen eser eses esne esrd esse essu esus eucd eude euer eur- eurc eure euse exec exed exen exer exes exrx nccc nccn nccr nccs nccu ncdc ncdn ncdr ncds ncdu ncec nced ncee ncen ncer nces ncnc ncnd ncrc ncre ncsc ncse ncss ncue ndcc ndcs ndde nder ndrc ndre ndss necc nece necr necs nedc nedd nede neds nedu need neen neer nees nend nene nens nenu nerc nerd nere nerr ners neru nesc nese nesn nesr ness neuc neue neun neur neuu nexe nexx nnes nnnn nnss nrcs nrdc nrds nren nrrc nrrd nrsc nscc nscd nscs nsds nsec nser nsnr nsrc nsrd nssc nsse nssr nsss nuce nucs nucu nudc nudd nude nuee nuer nunc nune nunn nuns nurc nurd nure nurn nurr nurs nuru nuse nuss nusu nxdn rccc rccs rcdc rcde rcds rcnr rcrd rcsc rcsd rcss rder recc recd rece recr recs recu redc redd rede redr reds redu redx reed reen rees rend rene renn rens renu rerd rere rers reru rese resn ress reue reus reuu reux rexx rncs rndc rnds rred rrrr rrun rscc rscn rscs rsdd rsds rsee rsnn rsnr rsre ruce rudd rude ruds rued ruen ruer rues runc rund rune runn runs rurc rurd rure rurs ruru ruse russ rusu ruud ruun rxes sccc scce sccs scdc scds scec scee scer scnd scnr scr- scrc scre scrn scrs scsc scsd scsn scsr scsu scud scun scur sdcc sddc sdds sder sdes sdrc sdrs sdsc sdss sdsu se-c se-d se-e se-n se-s se-u se-x sec- secc secd sece secn secr secs secu sede seds seec seed seen seer sees seeu seex send sene senn senr sens serc serd sere sern serr sers seru sesc sese sess seur seux sex- sexe sncc sned snee sner snes snns snrs snsd snur snus srcc srde srec sres srnn srsd sscc ssce sscs ssdc ssdd ssec ssee sses ssex ssns ssrc ssrs sssc ssss suc- succ sucr sucs sudd sude suds sued suee suen suer sues sueu sun- sund sune sunn suns sunu sur- surc surd sure surn surr surs suru sus- susd suse suss susu suus sux- suxe sxde ucdc ucdd uces ucrc ucsc ucsd ucsu udds uden uder udsd udun uend uers uesn uess uncc unce uncs unde unds unec uned unee unen uner unes unne unns unrs uns- unsc unus urde urds urdu ure- ured ures urex urne urns urre urse urss ursu urun urur urus uscc usce uscs usdc usde usds used usee usen user uses usnc usnr usnu ussc usse ussr usss ussu usun usus uuen uuuu uxue uxus x-ed xces xdcc xeer xen- xene xenn xenu xer- xers xeus xexe xnee xrcd xrds xsun xurs xuxu xxxx