perp perr pers pert peru pese pess pest pesu pete petr pets pett peur peut ppcc ppcd ppcs ppds pper pppd pppp ppps pprc ppru ppss ppts pptt ppur prcc prcd prcp prcs pre- prec pred pree prep pres pret preu prpd prps prrd prrs prsc prsd prse prss prtc prtp prtr prud prue prus prut pruu pscu psdc psdp psdr psds psec pspp pspr psps psrd psrp pssc psse psst psts pstu ptcc ptdc pter ptpd ptrd ptsd pttc pu-e puce puds pudu pued puer puet pueu pupe pups pupu pur- pure purp purr purs puru pusd puss pust put- pute puts putt putu puuc rccc rccs rcdc rcde rcds rcep rcet rcpd rcps rcpt rcrd rcsc rcsd rcss rctc rcts rder rdpc recc recd rece recp recr recs rect recu redc redd rede redr reds redu reed reep rees reet repe repp repr reps rept repu rerd rere rers rert reru rese resp ress rest retd rete retr rets rett reue reup reus reut reuu rpcs rpdp rpet rpps rptd rpts rred rrrr rrsp rscc rscs rsdd rsds rsee rsps rsre rstp rsts rstu rtcc rtce rtdt rtee rtes rtps rtss rttp rtts ruce ruct rudd rude rudp ruds rued ruer rues ruet rupe rupp rupt rurc rurd rure rurp rurs ruru ruse russ rust rusu rute ruts rutt rutu ruud sccc scce sccp sccs scct scdc scdp scds scec scee scep scer scet scpe scps scpt scr- scrc scre scrs scsc scsd scsr scst scsu sctc sctd sctr scts scud scup scur scut sdcc sddc sdds sdep sder sdes sdet sdpr sdps sdrc sdrs sdsc sdss sdsu se-c se-d se-e se-s se-t se-u sec- secc secd sece secr secs sect secu sede seds seec seed seep seer sees seet seeu sepd sepe sepp sepr seps sept sepu serc serd sere serp serr sers sert seru sesc sese sess sest set- setc sete sets sett seur spcc spcs spdc spde spdp spdr spdt spec sped spee sper spes spet sppd spps sprd sprs spsd spse spsp spss spst sptc sptr spts spud spue spur spus sput srcc srct srde srec sres srpc srps srpt srsd srsp srtp srtr sscc ssce sscp sscs ssdc ssdd ssdp ssec ssee ssep sses sset sspc sspe ssps sspt ssrc ssrs sssc ssss sstc sstd sstp ssts stcc stcp stcs stcu stds stec sted stee step ster stes stet stpd stpp stps strc strd stre strs stru stss sttc sttd sttr stuc stud stue stup stur stus stut suc- succ sucr sucs sudd sude suds sued suee suer sues suet sueu sup- supe supp supr sups supt sur- surc surd sure surp surr surs surt suru sus- susd suse susp suss sust susu sute sutu suus tccc tccu tcdd tcep tctc tcts tdes tdse tdss tecr tecs tect tedd tede teds teec teed teer tees teet tepe tepp tepu ter- terc tere terp terr ters teru tesc tesd tese tesp tess test tete tetr tets tett tetu teut tpcd tpcp tpcs tpdu tped tper tppd tppp tppr tprs tpsc tpte tptp tptr tput trcc tre- trec tred tree tres tret treu trpc trpe trpp trps trsd trst trtc trte trtr truc trud true trus trut truu tscc tscp tsec tses tset tsps tspt tsse tssr tsst tstc tsts tsup ttcp tter ttss tttt tucc tude tudu tuer tues tuet tupe tups tupu turc turd ture turp turr turs turt turu tusc tusd tuss tust tute tuts tutt tutu u-rp uccp ucdc ucdd uces ucrc ucsc ucsd ucst ucsu ucut udds uder udet udpd udsd udts uers uess upcs uped uppc uppe uppp uppu upsc upse upup urde urds urdu ure- ured ures uret urre urse urss ursu urte urts urup urur urus urut uscc usce uscs usdc usde usdp usds usdt used usee user uses uset uspc uspp usps ussc usse ussr usss usst ussu ustc uste ustp usts usus utec utep uter utes utpd utsc uttu uucp uuuu

-tree c-p-c c-tec ccccc cccsd ccett ccups cders cduce ceded ceder cedes cedr- cedre ceede ceere ceese cepes cepet cerc- cerce cercs cerec cered cerer ceres ceret cerps cerre cerrs cerse cerss certe certs cerus cesce cescr cesse ceste cests cetes cetpd cette cetus cpctc cpesc crece crede creds creed creep creer crees crepe crept crepu cresc crese cress crest crete cretu creu- creue creup crres cruce crude cruds cruet crupe crure cruse crust cruts csere csprs cstcc ctdrs cteep ctree cttee cudde cuers cueup cuper cupes cupr- curce curds cured curer cures curet curre currs curse curst curts curup cusec cuser cusps cusse custe cutcu cutee cuter cutes cutts cutup d-cru dcups ddddd deces decet decss decur decus dedde dedee deder dedes dedur dedut deece deede deeds deepc deepe deepp deeps deepu deere deers deese deess deest deets depce depps depse depts depue derce derde dered deres derps derpt derre dersu derue desc- desde desed despe desse deste desur desus deter detre dette detur deuce deure deuse deut- dprts drdre dredd drede dreds dreed dreep drees drepe drere drese dress drest druce drude drupe druse drust dsedd dtest duces ducts duded duder dudes duduc duere duerr duete duets duett dueup duped duper dupes dured duree durer dures duret durre durst durte durtu dusce duses dusts dutes dutse dutte e-cps e-dee e-sds eccup ecrus ecsed ecser ecspp ecups edder eddre edere eders edred educe educt eedes eeeee eeped eepee eerde epeds epees eperc epeus eppes epsdt epure erdec erdre erdut erecs erect erede erept erere erest erets erred erres errtu erses erste ersts erte erter ertes eruct erupt eruts esces escrt esdes esect esere esp-r espec esper espre essed esser esses essse essue estce ested estee estep ester estes estet estre estur estus esure etest etete etree etres etter ettes etude eturu eucre eudes eurre eurus euser p-rep pccts pcept pcert pctct peces pedee pedes peece peedu peeps peere peers peert peese peest peete peets pepee pepes peppe pepst pept- pepup perce percs perde perdu perec perer peres peret perps perre perse persp perst