prrs prsc prse prss prtc prtp prtr prue pruf prus prut pruu pscu psec psfs pspp pspr psps psrp pssc psse psst psts pstu ptcc pter ptrf pttc pu-e puce puer puet pueu puff puft pupe pups pupu pur- pure purp purr purs puru puss pust put- pute puts putt putu puuc rccc rccs rcep rcet rcfc rcps rcpt rcsc rcss rctc rcts recc rece recp recr recs rect recu reef reep rees reet refe reff refr refs reft refu repe repp repr reps rept repu rere rers rert reru rese resp ress rest rete retr rets rett reue reuf reup reus reut reuu rfef rffc rftc rpcs rpet rpfc rpps rpts rrfc rrrr rrsp rscc rscs rsee rsfc rsps rsre rstp rsts rstu rtcc rtce rtee rtes rtfc rtps rtss rttp rtts ruce ruct ruer rues ruet rufc rufe ruff ruft rupe rupp rupt rurc rure rurp rurs ruru ruse russ rust rusu rute ruts rutt rutu sccc scce sccp sccs scct scec scee scep scer scet scfc scfe scpe scps scpt scr- scrc scre scrs scsc scsr scst scsu sctc sctr scts scup scur scut se-c se-e se-f se-s se-t se-u sec- secc sece secr secs sect secu seec seef seep seer sees seet seeu seff seft sepe sepp sepr seps sept sepu serc sere serf serp serr sers sert seru sesc sese sess sest set- setc sete setf sets sett seur sfcc sfcs sfer sffc sfpc sfrc sfss sfsu sftp sfts spcc spcs spec spee spef sper spes spet spfc spfs sppf spps sprs spse spsp spss spst sptc sptr spts spue spur spus sput srcc srct srec sres srfc srpc srps srpt srsp srtp srtr sscc ssce sscp sscs ssec ssee ssep sses sset ssfc ssfp sspc sspe sspf ssps sspt ssrc ssrs sssc sssf ssss sstc sstp ssts stcc stcp stcs stcu stec stee stef step ster stes stet stfc stfu stpf stpp stps strc stre strs stru stsf stss sttc sttr stuc stue stuf stup stur stus stut suc- succ sucr sucs suee suer sues suet sueu suf- sufc suff sufr sufs sufu sup- supe supp supr sups supt sur- surc sure surf surp surr surs surt suru sus- suse susp suss sust susu sute sutu suus tccc tccu tcep tcfc tctc tcts tecr tecs tect teec teef teer tees teet tefc teff teft tepe tepp tepu ter- terc tere terf terp terr ters teru tesc tese tesp tess test tete tetr tets tett tetu teut tfcu tfec tfpt tfrs tfss tftc tftp tpcp tpcs tper tppp tppr tprs tpsc tpte tptp tptr tput trcc tre- trec tree tref tres tret treu trfc trfr trpc trpe trpp trps trst trtc trte trtr truc true trus trut truu tscc tscp tsec tses tset tsfc tsps tspt tsse tssf tssr tsst tstc tsts tsup ttcp tter ttfc ttff ttss tttt tucc tuer tues tuet tufc tufe tuff tuft tufu tupe tups tupu turc ture turf turp turr turs turt turu tusc tuss tust tute tuts tutt tutu u-rp uccp uces ucrc ucsc ucsf ucst ucsu ucut uers uess ufcu ufer uffe uftp upcs uppc uppe uppp uppu upsc upse upup ure- ures uret urfe urff urft urre urse urss ursu urte urts urup urur urus urut uscc usce uscf uscs usee usef user uses uset usfc usfs uspc uspp usps ussc usse ussf ussr usss usst ussu ustc uste ustp usts usus utec utep uter utes utsc uttu uucp uutf uuuu

-tree c-p-c c-tec ccccc ccett ccups ceere ceese cefcu cepes cepet cerc- cerce cercs cerec cerer ceres ceret cerfs cerps cerre cerrs cerse cerss certe certs cerus cesce cescr cesse ceste cests cetes cette cetus cfu-e cpcfc cpctc cpesc crece creep creer crees creft crepe crept crepu cresc crese cress crest crete cretu creu- creue creup crres cruce cruet crufe cruft crupe crure cruse crust cruts csere csprs cstcc cteep ctree cttee cuers cueup cufeu cuffe cuffs cufre cuper cupes cupr- curce curer cures curet curre currs curse curst curts curup cusec cuser cusps cusse custe cutcu cutee cuter cutes cutts cutup e-cps eccup ecrus ecser ecspp ectfe ecups eeeee eepee ef-ts ef-tu efere efetf effer effet effts efter efuru efuse efutu epees eperc epeus eppes eptfe epure erecs erect erept erere erest erets erres errtu erses erste ersts erte erter ertes eruct erupt eruts esces escrt esect esere esp-r espec esper espre esref esser esses essse essue estce estee estep ester estes estet estre estur estus esure etest etete etree etres etter ettes eturu eucre eurre eurus euser fcsts feces feere feers feese feets ferce feres feret ferr- ferre ferse ferte ferus feser fesse fest- feste fests festu feter fetes fette fetus feuer feurs feute frcpc frcsc freep freer frees freet frere frese fress frest frets frett freur fruct frust frute ftest ftpfs ftrtt fu-fu fucus fuest fuffs furps furrs furse furst furus fusee fuser fuses fusse fuste fusts fusus futsu futur fuuse p-rep pccts pcept pcert pctct peces peece peeps peere peers peert peese peest peete peets pepee pepes peppe pepst pept- pepup perce percs perec perer peres peret perfs perps perre perse persp perst perte peruc perur perus pesce peses pesse peste pests pesut petcu peter petes petr- petre petru pette petts petur petus peuce peure peurs ppers prece preef prees preff prefs preps prese press prest prete preus pruce pruss prute psecu pssst pssts pter- ptere pters ptprc ptpre ptprf ptprr ptprs ptprt ptpru puces puets puett puffs pupet puppe purce puree purer pures purre purrs purse purte purus pusce puter putre putt- putte putts puttu putup puurs rcpsc rcpts re-up recce recep recet recpt rect- recte rects recue recur recus recut reece reecs reefe reefs reeft reepe reere reese reest refer refet reffe refts refus refut repec repet reppe repps reprt repts repus reput rere- reree reres reret resee reses reset resse reste restr rests resue resup resus retee reter retes retsu rette retts reuer reuet reups reuse reuss reute rperf rrsps rspec rsssf rsust rucer ruere ruers ruete ruffe