dudd dude dudo dudu duer duet duo- dupe dupo dure duro durt duru dute dutp duur duut duve dvdr dvor dvrp eccc ecce ecco ecct ecdc eced eco- ecod ecop ecot ecou ecpd ecpp ecrc ecrr ecru ecrv ect- ectc ecto ectv eddc edde eddo eddp ede- eder edoc edod edou edru edtv educ edup edur edve eede eedu eeee eeoc eerc eero eetc eete eetu eocd eode eore eotc eotd eoto epcc epec epee eper epoc epod epor epot eppc eppo eppp epro eprp epte eptv ercc erce ercp erde erec ered erer eret erev eroc erod eroe eroo erpe 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 evop evre o-eo occc occt oce oced ocee ocet ocpd ocpp ocre ocro ocrr oct- octe octo ocur oddd oded odeo oder odet odoo odop odor odot odou odrp odtu odur oec- oecc oedo oeec oere oevp oocr ooer oooo oord oore oort ootp opec oped opep oper opet opo- opor oppo opto orce orco orde ordo ordu ore- orec ored oreo orer oro- oroe oror orot orpc orpe orro ortc orte orto orup orve orvr otcd oted otee otep oter oto- otoe otoo otor otov otpp otre otro otte otto ottu otur oucc oudc oude oued ouer oupe oupv our- oure ouro ourt out- oute outo ouu- ovde ovee over ovet ovo- ovod ovoo ovot ovpp ovre pccc pcce pcep pcer pcod pcoe pcpp pcrc pcrd pcre pcte pctv pdcp pdoc pdpr pdrc pdtc pdtv pece peco pecr pect ped- pede pedo peec peed peep peer peet peev peor peou pepd pepe pepo per- perc perd pere pero perp perr pert peru perv pete peto petr pett peur peut pocd poce poco pod- podd pode podo podu poed poer poet pood poop poor poot pop- popc pope popo popp popt porc pore poro porr port potc potd pote poto pott potu poud poup pour pout povo ppcc ppcd pper ppod pppd pppo pppp pprc ppru pptt pptv ppur prcc prcd prcp pre- prec pred pree prep pret preu prev pro- proc prod proe proo prop prot prou prov prpd prrd prtc prtp prtr prud prue prut pruu ptcc ptdc pter ptop ptpd ptrd pttc pu-e puce pudo pudu pued pueo puer puet pueu pupe pupu pur- pure puro purp purr puru put- pute puto putt putu puuc pvco pvdc rccc rcdc rcde rcep rcet rcpd rcpo rcpt rcrd rctc rctv rcuv rcvr rder rdev rdoc rdpc recc recd rece recp recr rect recu redc redd rede redo redr redu reed reep reet reev reod reop reot reou repe repo repp repr rept repu rerd rere rero rert reru retd rete reto retr rett reue reup reut reuu revd reve revo revp rocc roce roco rodd rode rodo roed roer roet roev rood roop roor root rope ropo rorc rore roro rort roru rotc rote roto rotr rott roud roue roup rout rove rovo rpdp rpet rpoe rptd rred rrrr rtcc rtce rtdt rtee rttp rtve ruce ruct rudd rude rudo rudp rued ruer ruet rupe rupp rupt rurc rurd rure ruro rurp ruru rute ruto rutt rutu ruud ruve ruvu rv-c rved rver tccc tccu tcdd tcep tcov tcpo tctc tdor tdtv teco tecr tect tedd tede teec teed teer teet teev teor tepe tepp tepu ter- terc tere tero terp terr teru tete teto tetr tett tetu teut toce toco todd tode todo todt todu toed toee toer toet tood toor toot top- topd tope topo topp topt topu topv torc tord tore toro torp torr tort toru torv totc totd tote toto totr tott toup tour tout touv tove tovo tpcd tpcp tpdu tped tper tppd tppp tppr tpte tptp tptr tput trcc tre- trec tred tree treo tret treu trev troc trod troe troo trop trot trou trpc trpe trpp trpv trtc trte trtr truc trud true trut truu ttcp tteo tter ttoe ttop tttt tucc tuco tude tudu tuer tuet tuor tupe tupo tupu turc turd ture turo turp turr turt turu tute tuto tutt tutu tuuo tver tvro tvrr tvtv u-rp uccp ucdc ucdd ucrc uctv ucut uder udet udev udoo udop udot udpd uocc uor- uore uovo updo uped upor uppc uppe uppp uppu upto uptv upup upvc urde urdu ure- ured uret uro- uroo urpo urre urte urup urur urut urve utec utep uter utor utpd utto uttu uucp uuoc uuuu uv-c uver uvrd uvvu vdcc vdcp vdec vder vdot vdre vdtp vecc vedc vede vedo veep veer veet veor vepe vepr ver- verd vere vero vert vete veto vetr veur veve vevo voce vode vodo voer voet voeu vooc voor voot vopt vor- vord vore voro vort voru votd vote voto votp voud voue vour vout vpro vred vreo vret vroc vrot vrto vtec vtpr vuco vudu vurp vurt vutv vver vvvv

-tree c-cor c-dot c-evo c-p-c c-pop c-tec ccccc ccctv ccdev ccett cddvd cduce ceco- ceddo ceded ceder cedor cedr- cedre cedro ceede ceedo ceere ceoce ceoor cepet cepot ceppo cerc- cerce cerco cerdo cerec cered cerer ceret cero- ceroc cerou cerre cerro certe cervo ceto- cetpd cette co-co co-ed co-op cocc- cocce cocco coceo cocto cocur codco codde codec coded coder codo codru coepe coete coeur coeve coode cooed cooee cooer coope coopt coord coore coote copce copec coped coper coppe coppo copr- copre copro copte copto copur coput corce corde core- cored coree corer coreu coro- corod corop corot corpe corre corte corto cortv corve corvo coted coter cott- cotte cotto cottu couco coude couer coupe courd coure court couru couto coutu couve coved coveo cover covet cpctc crece crede credo creed creep creer creo- creop creot crepe crept crepu crete cretu creu- creue creup creve croce croco crode crodo crood crooe croop croot cropc crope cropo crore crote crott croud croup crout crove cruce crude crudo cruet cruor crupe crure cruve cteep ctree cttee