-er -up eee eep eer ees eet eex ep- epe epp epr eps ept epu epx ere erp err ers ert eru es- ese esp esr ess est esu esx ete etp etr ets ett etu etx eu- eue eup eur eus eut eux ex- exe exp exr exs ext exu exx p-p pee pep per pes pet peu pex ppe ppp ppr pps ppt ppu ppx pre prp prr prs prt pru prx ps- pse psp psr pss pst psu psx pt- pte ptp ptr pts ptt ptu ptx pue pup pur pus put puu pxe pxr pxs pxt re- ree rep rer res ret reu rex rpe rpp rpr rps rpt rpu rpx rrp rrr rrs rrt rru rse rsp rsr rss rst rsu rsx rte rtp rtr rts rtt rtu rtx rue rup rur rus rut ruu rux rxp rxr rxs se- see sep ser ses set seu sex spe spp spr sps spt spu spx sr- sre srp srr srs srt srx ss- sse ssp ssr sss sst ssu ssx ste stp str sts stt stu stx sue sup sur sus sut suu sux sxs sxt sxu t-x te- tee tep ter tes tet teu tex tpe tpp tpr tps tpt tpu tpx tre trp trr trs trt tru trx tse tsp tsr tss tst tsu tsx tte ttp ttr tts ttt ttu ttx tue tup tur tus tut tuu tux txe txs txt txu uee uep uer ues uet up- upe upp upr ups upt upu upx ur- ure urp urr urs urt uru urx use usp usr uss ust usu usx ute utp utr uts utt utu utx uue uur uus uut uuu uxr uxt uxu xee xep xer xes xet xeu xex xpe xpp xps xpt xrt xrx xsp xss xst xtp xtr xts xtx xue xup xus xxp xxx

eeee eees eeps eers eese eete eets eetu eext epee eper epes eppp epps eprp eprs epsp epss epsx epte epus epxp er-x erer eres eret erpe erps erre errs erse erst erts ertu erur erus esee eser eses eset espe espp esps esse essp esst essu este estp estr ests esus etee eter etes etre etsu ette ettu etux euer eur- eure eurt euse exer exes expr expt exrx exte extr exts peep peer pees peet pepe peps per- pere perp perr pers pert peru pese pess pest pesu pete petr pets pett peur peut pper pppp ppps ppru ppss ppts pptt ppur pre- pree prep pres pret preu prex prps prrs prse prss prtp prtr prue prus prut pruu pspp pspr psps psrp psse psst psts pstu pter pu-e puer puet pueu pupe pups pupu pur- pure purp purr purs puru puss pust put- pute puts putt putu puxe pxes reep rees reet repe repp repr reps rept repu rere rers rert reru rese resp ress rest rete retr rets rett reue reup reus reut reuu reux rexx rpet rpps rpts rrrr rrsp rsee rsps rsre rstp rsts rstu rtee rtes rtex rtps rtss rttp rtts ruer rues ruet rupe rupp rupt rure rurp rurs ruru ruse russ rust rusu rute ruts rutt rutu rxes se-e se-s se-t se-u se-x seep seer sees seet seeu seex sepe sepp sepr seps sept sepu sepx sere serp serr sers sert seru sese sess sest set- sete sets sett setx seur seux sex- sexe sexp sext spee sper spes spet spex spps sprs spse spsp spss spst sptr spts spue spur spus sput sres srps srpt srpx srsp srtp srtr ssee ssep sses sset ssex sspe ssps sspt sspx ssrs ssss sstp ssts stee step ster stes stet stex stpp stps stre strs stru stss sttr stue stup stur stus stut stux suee suer sues suet sueu sup- supe supp supr sups supt sur- sure surp surr surs surt suru sus- suse susp suss sust susu sute sutu suus sux- suxe suxt teer tees teet tepe tepp tepu ter- tere terp terr ters teru tese tesp tess test tete tetr tets tett tetu tetx teut text tper tppp tppr tprs tpte tptp tptr tput tre- tree tres tret treu trex trpe trpp trps trst trte trtr true trus trut truu trux tses tset tsps tspt tsse tssr tsst tsts tsup tter ttss tttt tuer tues tuet tupe tups tupu ture turp turr turs turt turu tuss tust tute tuts tutt tutu tuxs txtr u-rp uers uess uext uppe uppp uppu upse upup ure- ures uret urex urre urse urss ursu urte urts urup urur urus urut usee user uses uset uspp usps usse ussr usss usst ussu uste ustp usts usus utep uter utes uttu uuuu uxue uxus xeer xer- xers xert xeus xexe xper xrep xsup xtep xtsr xurs xuxu xxxx

-tree eeeee eepee epees epeus eppes epsxe epure erept erere erest erets erres errtu erses erste ersts erte erter ertes erupt eruts esere esp-r esper espre esser esses essex essse essue estee estep ester estes estet estre estur estus esure etest etete etext etree etres etter ettes eturu eurex eurre eurus euser exept exert exper exptr exter extre extts extue exust exute p-rep peeps peere peers peert peese peest peete peets pepee pepes peppe pepst pept- pepup perer peres peret perps perre perse persp perst perte perur perus peses pesse peste pests pesut peter petes petr- petre petru pette petts petur petus peure peurs ppers prees preps prese press prest prete preus preux pruss prute pssst pssts pter- ptere pters ptpre ptprr ptprs ptprt ptpru puets puett pupet puppe puree purer pures purex purre purrs purse purte purus puter putre putt- putte putts puttu putup puurs re-up reepe reere reese reest repet reppe repps reprt repts repus reput rere- reree reres reret resee reses reset resse reste restr rests resue resup resus retee reter retes retex retsu rette retts reuer reuet reups reuse reuss reute rexer rexes rrsps rsust rtext ruere ruers ruete rupee ruper rupes rupse ruses ruspe russe ruste rusts rustu ruter rutte ruutu seeps seere seers seese seest seesu