eret erfc erft erg- ergg ergi eric erie erin erit eriu erne erni errc erre ertu eruc erur etcc etec etee eten eter etfc etfe etic etin etne etnr etre ette etti ettn ettu etui etun euer eufc eufi euge euin eur- eurc eure eurt fccf fcic fcii fece fect feen feer feet fefc fefe feff fefi fege fegg feie feig fein feir feit fene feng feni fenn fent ferc fere fern ferr fert feru fete feti fetr fett fetu ffcc ffee ffff ffii ffrr fftf ffun ficc fice fict fiec fief fien fier fifc fife fiff fifi fift figc figg fiii fine fing fini finn fint fire firn fitc fite fiti fitt fnci fnet fnuf frcc frcn free frei fren fret frfc fric frie frig frin frit frue frug frun ft-c ften fter ftfc ftii ftuc fuc- fuci fuct fuet fufc fuff fufu fuge fugi fugu fuig fuir fuit fune funf fung funt fur- fure furg furi furn furr furt fute futi futu gc-c gccc gccf gcet gcfc gcic gcii gcrg gctc gece geen geer geet gefe geft gege gegg geic geie geif geig gein geir geit gen- genc gene genf geng geni genn gent genu gere geri gern gert geru gete getg geti gett geue geun gfcf gfci gfer ggfg gggg ggrn gicr gief gien gier giet gife giff gift gifu gige gigg gigi gign ging gini ginn ginu gire girg giri girn girr girt giru gite giue giur gncc gnet gneu gngc gnin gnit gnrc gnrr gnti grcc grce grec gree gref greg gren gret greu gric grie grif grig grin grit grni grrr grtc grue gruf grug grui grun grur grut gtcr gtfc guci guen guer gufc guff guge gugg gugi gugu guin gung gunn gunt gure gurg guri gurn gurr gurt guru gute guti gutt gutu iccc iccf icci iccn iccr icct iccu icec icee icef icer icet icgc icnc icrc icre icrf icrr icrt icru icue iecc ieet ieie ient iere ieri ietf iett ifen ifer ifge ific ifit ifni ifnr ifrf ifri iftn igcc igen iger iget igfc igne igni ignu igri igue iiie iiii iiit iirc iitr iitt iiuc ince inci incr inee inet ineu infi inge inig init inne inni innr innu inre inri intg inti intn intr intu inui inun ircc ircg ircu iree iren irer irfe irfu iri- iric irie irig irin irne irrc irre irri irte irtf irti irun itec iten iter itet itgc itic itie itif itin itrf itri ittf itur iucc iuce iuef iuge iuiu n-ii nccc nccf ncci nccn nccr ncct nccu ncec ncee ncef ncen ncer ncfc ncfe ncgr ncit ncnc ncrc ncre ncri nctc ncte nctr ncue necc nece necr nect neef neei neen neer neet nefe neff nefi nege negi neic neif nein neir neit nene neng neni nent nenu nerc nere nerf neri nerr nert neru net- nete neti nett neuc neue neuf neun neur neut neuu nfct nfcu nfer nfff nfic nftc ngef ngen nger ngic ngri ngtn ngur nguu nicc nice nicf nici nicu nief nien nier niet nifc nife niff nift nigc nige nigg nigt niir niit niiu nine ning nini nire nirt niru nitc nite nitf niti nitr niue niur nngn nnit nnnn nntn nren nrfc nric nrrc ntcc nter nteu ntfc ntnu ntrc ntru nttr ntuc ntui nuce nuci nucu nuee nuer nuff nuin nuit nunc nune nung nunn nunt nurc nure nuri nurn nurr nurt nuru nute nutt nutu rccc rcet rcfc rcgc rcic rcnr rcrg rctc rctg rcti recc rece reci recr rect recu reef reen reet refe reff refg refi refn refr reft refu rege regi regn regr regt regu reif reii rein reir reit reiu rene reng reni renn rent renu rere rerg reri rert reru rete reti retr rett reue reuf reut reuu rfef rffc rfic rftc rgit rgtr ricc rice rict rief rien rier riet rieu rife riff rift rifu rige rigg rigi rigu riif riin rine rinf ring rinn rire riri rite riti ritt ritu riue rnie rnin rnnt rnut rrfc rrif rrrr rrun rtcc rtce rtcg rtee rtei rtfc ruce ruci ruct ruen ruer ruet rufc rufe ruff ruft ruge rugg rugi ruif ruin ruit runc rune runf rung runi runn runt rurc rure ruri ruru rute ruti rutt rutu ruun tccc tccu tcfc tcfg tcnn tctc tecr tect teec teef teen teer teet tefc teff tefi teft tegg tegi tegt tegu teic teie tein teir teiu tenc tene teng teni tenn tent tenu ter- terc tere terf teri tern terr teru tete teti tetr tett tetu teut tfcu tfec tfin tftc tgcc tgif tgtc ticc tice tie- tiee tief tiei tien tier tiet tiff tift tige tigi tigr tiit tiiu tinc tine ting tini tinn tint tinu tire tiri tirr tiru titc tite titi titt titu tncc tnef tnfc tnge tnut trcc tre- trec tree tref treg trei tren tret treu trfc trfr trge tri- tric trie trif trig trin trit trng trtc trte trtr truc true trug trun trut truu ttcn tten tter ttfc ttff ttfn tttt tucc tuei tuen tuer tuet tufc tufe tuff tufi tuft tufu tugg tugu tuig tuin tuit tuiu tunc tune tung tuni tunn tunu turc ture turf turg turi turn turr turt turu tute tuti tutt tutu u-ie ucci ucin ucrc ucut uein ueir ufcu ufer uffe ugcc ugcg uggt ugne ugni ugri ugur uguu uige uint uirr uncc unce uncf uncg unci unct unec unee unef unen uner ungu uni- unic unie unif unii unin unir unit unne unni unrf unte unut urci ure- uret urfe urff urfi urft urge urgi urgu uric urie urif urin uriu urne urni urre urri urte urun urur urut utec uter utin utne utri utti uttu utug uuen uuni uuri uutf uuuu

-tree c-tec ccccc cccii ccett ccifc cciii ccing ccitt ccnet ceci- cecie cecri cecun ceene ceere cefcu cegge cegne cegui ceint ceirt cence cenci cenei ceneu cent- centi centr cerc- cerce cerci cerec ceren cerer ceret cerge ceric cerie cerin cerne