duco duct dudd dude dudo dudu duer duet dugu duhe duhr duhu duo- dure durg duro durt duru dute duur duut eccc ecce ecco ecct ecdc eced eche echo echt eco- ecod ecog ecot ecou ecrc ecrr ecru ect- ectc ecth ecto eddc edde eddo ede- edeh eder edge edoc edod edou edru educ edur eede eedu eeee eeoc eerc eerg eero eetc eete eeth eetu egcc egcg egcr egec egee eger egge eggh eggo eghd eghe eghh ego- egor egot egre egte ehcc ehdd eheh eher eheu ehre ehte ehud eocd eode eore eotc eotd eoto ercc erce erch erde erec ered erer eret erg- ergg ergh ergo erhc erhu eroc erod eroe eroo errc erre erro erth ertu eruc eruh erur etcc etch etco etec etee eter eth- ethe etho etoe etoh etre etro ette etto ettu eucd euch eude euer euge eugh eur- eurc eure euro eurt euth gc-c gccc gcet gcrg gctc gdor gdrc gdrt gece gedd gede gedo gedu geed geer geet gege gegg gego geht gehu geo- geog gerd gere gero gert geru gete getg geth geto gett geue gggg gghg ghee gheg ghug goce goch gocr gode godo goed goer gogh gogo good goog goor goot gord gore gorg goro gorr gort gotd gote goth goto gott gou- goud goug gour gout grcc grce grdc grec gree greg gret greu groc grod grog groh groo gror grot grou grrr grtc grue grug grur grut gtco gtcr gtoe guch gude gudo gudu guer guge gugg gugh gugu guhe guhr gurd gure gurg gurh guro gurr gurt guru gute guth guto gutt gutu hccc hcch hcdr hcgh hcrd hdoc hdod hdtt hech hect hedd hede hedg hedo heed heeg heer heet hege hegg hegh hego hehe heho heor heou herc herd here herg hero herr hert heru hete heth heto hett hetu heue heug heur hggc hgtc hhgg hhhh hoce hoch hocr hode hodh hodr hoed hoer hoge hogg hogh hogo hogu hohe hoho hood hooe hoor hoot horc hord hore horg horo horr hort hotd hote hoth hoto hotr hott hotu houd houe hour hout hrdc hree hrod hrrc hrte hrud htcc htet htoh httr huch hucu hudd hude hudo hudu hued huer huet huge hugg hugh hugo huhu huor huot hurd hure huro hurr hurt huru hute huth huto hutt hutu o-eo occc occt oce oced ocee ocet oche ocht ocre ocro ocrr oct- octe octo ocur oddd oded odeo oder odet odoh odoo odor odot odou odtu odur oec- oecc oedo oeec oere ogdc ogdh ogee oger ogge oght ogod ogog ogou ogre ogro ohcc ohed ohee oher ohgr ohho ohoh ohre ohte ohto ohtu oocr ooer ooho oooh oooo oord oore oort orce orch orco orde ordo ordu ore- orec ored oreg oreh oreo orer orge orgo orhe oro- oroe oror orot orro ortc orte orth orto otcd oted otee oter othe otho othr oto- otoe otog otoh otoo otor otre otro otte otto ottu otur oucc ouch oudc oude oudh oued ouer ouge ough our- oure ouro ourt out- oute outh outo ouu- rccc rcdc rcde rcet rcgc rcrd rcrg rctc rctg rder rdoc recc recd rece rech recr rect recu redc redd rede redh redo redr redu reed reet regd rege rego regr regt regu rehe reht reod reog reot reou rerd rere rerg rero rert reru retd rete reth reto retr rett reue reut reuu rgtr rhce rhcg rhee rheo rhet rhoc rhod rhog rhoh rhue rhug rocc roce roch roco rodd rode rodo roed roeg roer roet roge rogg rogh rogo rohe rohr rohu rood roog roor root rorc rore roro rort roru rotc rote rotg roth roto rotr rott roud roue rouh rout rred rrrr rtcc rtce rtcg rtdt rtee ruce ruch ruct rudd rude rudo rued ruer ruet ruge rugg rugh ruhe ruhh ruhr rurc rurd rure ruro ruru rute ruth ruto rutt rutu ruud tccc tccu tcdd tch- tche tchh tcho tchr tchu tctc tdor tech teco tecr tect tedd tede teec teed teer teet tegg tegh tego tegt tegu teho tehr teoh teor ter- terc tere tero terr teru tete teth teto tetr tett tetu teut tgcc tgtc thch thdr the- thec thed thee theo ther thet theu thoe thog thoo thor thot thou thre thro thru thtr thud thue thug thur toce toch toco todd tode todo todt todu toed toee toeh toer toet toge togh togo togr togt toho tohu tood tooh toor toot torc tord tore torg toro torr tort toru totc totd tote toth toto totr tott toug touh tour tout trcc tre- trec tred tree treg treo tret treu trge troc trod troe trog troo trot trou trtc trte trtr truc trud true trug trut truu tteo tter ttoe tttt tucc tuch tuco tude tudu tuer tuet tugg tugh tugu tuht tuhu tuor turc turd ture turg turo turr turt turu tute tuto tutt tutu tuuo ucdc ucdd uche ucho ucrc ucut uder udet udge udoh udoo udot ugcc ugcg ugeo uggo uggt ughe ugod ugro ugur uguu uh-d uhde uher uhoh uhuh uocc uor- uore urch urde urdu ure- ured ureh uret urge urgh urgu urho uro- uroo urre urrh urte urth urur urut utec uter uthe utor utto uttu utug uuoc uuuu

-tree c-cor c-dot c-tec ccccc ccett cduce cech ceche cecht ceco- ceddo ceded ceder cedor cedr- cedre cedro ceede ceedo ceere cegge ceoce ceoor cerc- cerce cerco cerdo cerec cered cerer ceret cerge cero- ceroc cerou cerre cerro certe ceto- cette chech cheer cheet chege chegg chego cheho chehr cheo cherd chere chero chert cheru chete cheth cheto chett cheue chher choco chode choge chogu choor chor- chord chore choro chort chote chott choue chout chueh chuet chugh chur- chure churr churt churu chute co-co co-ed cocc- cocce cocco coceo coche cocto cocur codco codde codec coded coder codge codo codru coete coeur coged coghe coght cogue cohee cohoe cohog cohoo cohue cooch coode cooed cooee cooer coord coore coorg coote cooth corce corde