c-cd cccc cccs cccu ccdc ccdr ccds cced ccee ccrc ccre ccrs ccsd ccss ccuc ccus cd-e cd-r cdcs cddr cdec cder cdes cdex cdre cdrs cdss cec- cece cecs cedd cede cedu ceec cees cer- cerc cerd cere cers cesc cese cesr cess ceux cexe crcc crce crcr crdc cre- crec cred cree cres creu crex crss crud crue crus crux cscc cscd csce cscr cscs csdr csec csee cser csrc csrd csrs cssd csse cssr csur csus cucc cuce cude cuds cued cuer cues curd cure curr curs cusd cuss cusu cxxx dccc dccs dccu dcds dcsc dcss dcxx dddd ddes ddrc ddre ddss dec- decc decd dece decs dedd dede dedu deed deer dees der- derc dere derr ders des- desc dese dess desu deue deur deus deux dex- dexe dred dree dres drrs drue drus druu dscc dscr dscs dsdr dsrc dsrr dssc duce ducs dudd dude duds dudu duer dues dure duru duse duur dxcc dxdc dxdr dxds dxec dxed dxes dxrd dxre dxrr dxrx dxss dxue dxur dxxr dxxx eccc ecce ecdc eced eces ecrc ecrr ecru ecsc ecse ecss ecsu ecus eddc edde edds ede- eder edes edex edru edss educ edur eecs eede eedu eeee eees eerc eers eese er-x ercc erce erde erds erec ered erer eres errc erre errs erse eruc erur erus esce escr escs escu esds esdu esdx esee eser eses esrd esse essu esus eucd eude euer eur- eurc eure euse exec exed exer exes exrx rccc rccs rcdc rcde rcds rcrd rcsc rcsd rcss rder recc recd rece recr recs recu redc redd rede redr reds redu redx reed rees rerd rere rers reru rese ress reue reus reuu reux rexx rred rrrr rscc rscs rsdd rsds rsee rsre ruce rudd rude ruds rued ruer rues rurc rurd rure rurs ruru ruse russ rusu ruud rxes sccc scce sccs scdc scds scec scee scer scr- scrc scre scrs scsc scsd scsr scsu scud scur sdcc sddc sdds sder sdes sdrc sdrs sdsc sdss sdsu se-c se-d se-e se-s se-u se-x sec- secc secd sece secr secs secu sede seds seec seed seer sees seeu seex serc serd sere serr sers seru sesc sese sess seur seux sex- sexe srcc srde srec sres srsd sscc ssce sscs ssdc ssdd ssec ssee sses ssex ssrc ssrs sssc ssss suc- succ sucr sucs sudd sude suds sued suee suer sues sueu sur- surc surd sure surr surs suru sus- susd suse suss susu suus sux- suxe sxde ucdc ucdd uces ucrc ucsc ucsd ucsu udds uder udsd uers uess urde urds urdu ure- ured ures urex urre urse urss ursu urur urus uscc usce uscs usdc usde usds used usee user uses ussc usse ussr usss ussu usus uuuu uxue uxus x-ed xces xdcc xeer xer- xers xeus xexe xrcd xrds xurs xuxu xxxx