c-cd cccc cccu cccv ccdc ccdr cced ccee ccoc ccod ccrc ccre ccrt cctc cctt cctv ccuc ccut ccvo cd-e cd-r cddr cdec cder cdot cdre cdtv cdvd cec- cece ceco cect cedd cede cedo cedt cedu ceec ceor ceou cer- cerc cerd cere cero cert cet- cete ceto cetv cevo coce coco coct cocu codd code coed cood coot cor- corc cord core coro corr cort cotc cote coto cott cotu coud coue cour cout cove covo crcc crce crcr crdc cre- crec cred cree creo cret creu croc crod croe croo cror crot crrt crtc crtv crud crue crut ctec ctor ctot ctrc ctvo ctvt cucc cuce cude cued cuer curd cure curo curr curt cut- cutc cute cuto cutt cutv cuve cvcc cver cvet cvrd cvrr cvte d-tv dccc dcct dccu dccv dctc dctv dcvd dddd ddoc ddot ddrc ddre ddtv dec- decc decd dece deco dect dedd dede dedo dedu deed deer deet deev deor der- derc dere dero derr derv dete deto detr deue deur deut deve devo doce doco doct docu dod- dodd dode dodo doer dood door doot dorc dord dore doro dorr dort doru dotd dote doto dott douc doud doue dour dout dove dred dree dret drev drod drot drou drue drut druu druv dtcc dted dtor dtot duce duco duct dudd dude dudo dudu duer duet duo- dure duro durt duru dute duur duut duve dvdr dvor eccc ecce ecco ecct ecdc eced eco- ecod ecot ecou ecrc ecrr ecru ecrv ect- ectc ecto ectv eddc edde eddo ede- eder edoc edod edou edru edtv educ edur edve eede eedu eeee eeoc eerc eero eetc eete eetu eocd eode eore eotc eotd eoto ercc erce erde erec ered erer eret erev eroc erod eroe eroo errc erre erro ertu eruc erur eruv erve etcc etco etec etee eter etoe etre etro ette etto ettu etvo eucd eude euer eur- eurc eure euro eurt ever evet evoe evoo evre o-eo occc occt oce oced ocee ocet ocre ocro ocrr oct- octe octo ocur oddd oded odeo oder odet odoo odor odot odou odtu odur oec- oecc oedo oeec oere oocr ooer oooo oord oore oort orce orco orde ordo ordu ore- orec ored oreo orer oro- oroe oror orot orro ortc orte orto orve orvr otcd oted otee oter oto- otoe otoo otor otov otre otro otte otto ottu otur oucc oudc oude oued ouer our- oure ouro ourt out- oute outo ouu- ovde ovee over ovet ovo- ovod ovoo ovot ovre rccc rcdc rcde rcet rcrd rctc rctv rcuv rcvr rder rdev rdoc recc recd rece recr rect recu redc redd rede redo redr redu reed reet reev reod reot reou rerd rere rero rert reru retd rete reto retr rett reue reut reuu revd reve revo rocc roce roco rodd rode rodo roed roer roet roev rood roor root rorc rore roro rort roru rotc rote roto rotr rott roud roue rout rove rovo rred rrrr rtcc rtce rtdt rtee rtve ruce ruct rudd rude rudo rued ruer ruet rurc rurd rure ruro ruru rute ruto rutt rutu ruud ruve ruvu rv-c rved rver tccc tccu tcdd tcov tctc tdor tdtv teco tecr tect tedd tede teec teed teer teet teev teor ter- terc tere tero terr teru tete teto tetr tett tetu teut toce toco todd tode todo todt todu toed toee toer toet tood toor toot torc tord tore toro torr tort toru torv totc totd tote toto totr tott tour tout touv tove tovo trcc tre- trec tred tree treo tret treu trev troc trod troe troo trot trou trtc trte trtr truc trud true trut truu tteo tter ttoe tttt tucc tuco tude tudu tuer tuet tuor turc turd ture turo turr turt turu tute tuto tutt tutu tuuo tver tvro tvrr tvtv ucdc ucdd ucrc uctv ucut uder udet udev udoo udot uocc uor- uore uovo urde urdu ure- ured uret uro- uroo urre urte urur urut urve utec uter utor utto uttu uuoc uuuu uv-c uver uvrd uvvu vdcc vdec vder vdot vdre vecc vedc vede vedo veer veet veor ver- verd vere vero vert vete veto vetr veur veve vevo voce vode vodo voer voet voeu vooc voor voot vor- vord vore voro vort voru votd vote voto voud voue vour vout vred vreo vret vroc vrot vrto vtec vuco vudu vurt vutv vver vvvv