-er -up eee eep eer ees eet ep- epe epp epq epr eps ept epu eqe eqp eqq eqs eqt equ ere erp erq err ers ert eru es- ese esp esq esr ess est esu ete etp etr ets ett etu eu- eue eup eur eus eut p-p pee pep per pes pet peu ppe ppp ppq ppr pps ppt ppu pqq pqr pqs pre prp prq prr prs prt pru ps- pse psp psr pss pst psu pt- pte ptp ptq ptr pts ptt ptu pue pup pur pus put puu qee qep qet qpp qpr qps qqq qqu qre qrp qrs qrt qru qsp qsr qst qtq qtr qts qu- que qur qus qut re- ree rep req rer res ret reu rpe rpp rpr rps rpt rpu rqs rrp rrq rrr rrs rrt rru rse rsp rsq rsr rss rst rsu rte rtp rtq rtr rts rtt rtu rue rup rur rus rut ruu se- see sep seq ser ses set seu spe spp spq spr sps spt spu sqq sqr sqs sr- sre srp srq srr srs srt ss- sse ssp ssq ssr sss sst ssu ste stp stq str sts stt stu sue sup suq sur sus sut suu te- tee tep teq ter tes tet teu tpe tpp tpq tpr tps tpt tpu tre trp trq trr trs trt tru tse tsp tsq tsr tss tst tsu tte ttp ttr tts ttt ttu tue tup tur tus tut tuu uee uep uer ues uet up- upe upp upr ups upt upu ur- ure urp urr urs urt uru use usp usr uss ust usu ute utp utr uts utt utu uue uur uus uut uuu

eeee eees eeps eers eese eete eets eetu epee eper epes eppp epps eprp eprs epsp epss epte epus eqpt equ- eque equs erer eres eret erpe erps erre errs erse erst erts ertu erur erus esee eser eses eset espe espp esps esqr esqs esse essp esst essu este estp estr ests esus etee eter etes etre etsu ette ettu euer eur- eure eurt euse peep peer pees peet pepe peps per- pere perp perq perr pers pert peru pese pesq pess pest pesu pete petr pets pett peur peut pper pppp ppps ppru ppss ppts pptt ppur pqrs pre- pree prep pres pret preu 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 qeep qere qerq qest qqqq qrss qrst qsqs qsqt qsrs qtrs quee quep quer ques quet qust qute quu- reep rees reet repe repp repr reps rept repu reqs rere rers rert reru rese resp resq ress rest rete retr rets rett reue reup reus reut reuu rpet rpps rpts rrrr rrsp rsee rsps rsre rstp rsts rstu rtee rtes rtps rtss rttp rtts ruer rues ruet rupe rupp rupt rure rurp rurs ruru ruse russ rust rusu rute ruts rutt rutu se-e se-s se-t se-u seep seeq seer sees seet seeu sepe sepp sepr seps sept sepu seqq seqs sequ sere serp serq serr sers sert seru sese sess sest set- sete sets sett seur spee sper spes spet spps spqr sprs spse spsp spss spst sptr spts spue spur spus sput sqep sqrt sres srps srpt srsp srtp srtr ssee ssep sses sset sspe ssps sspt ssrs ssss sstp ssts stee step ster stes stet stpp stps stre strs stru stss sttr stue stup stur stus stut suee suer sues suet sueu sup- supe supp supr sups supt suqs sur- sure surp surr surs surt suru sus- suse susp suss sust susu sute sutu suus teer tees teet tepe tepp tepu ter- tere terp terr ters teru tese tesp tess test tete tetr tets tett tetu teut tper tppp tppr tprs tpte tptp tptr tput tre- tree tres tret treu trpe trpp trps trst trte trtr true trus trut truu 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 u-rp uers uess uppe uppp uppu upse upup ure- ures uret urre urse urss ursu urte urts urup uruq urur urus urut usee user uses uset uspp usps usse ussr usss usst ussu uste ustp usts usus utep uter utes uttu utuq uuuu

-tree eeeee eepee epees epeus eppes epure eques equus erept erere erest erets erres errtu erses erste ersts erte erter ertes erupt eruts esere esp-r esper espre esqre esque esser esses essse essue estee estep ester estes estet estre estur estus esure etest etete etree etres etseq etter ettes eturu eurre eurus euser p-rep peeps peere peers peert peese peest peete peets pepee pepes peppe pepsq pepst pept- pepup peque perer peres peret perps perqs perre perse persp perst perte perur perus peses pesse peste pests pesut peter petes petr- petre petru pette petts petur petus peure peurs ppers pqrst prees preps prese press prest prete preus pruss prute pssst pssts pter- ptere pters ptpre ptprr ptprs ptprt ptpru puets puett pupet puppe puree purer pures purre purrs purse purte purus puter putre putt- putte putts puttu putup puurs q-tee qrstu qsrsr queep queer queet quere quers quert quest quete queue qureq quruq qurus qusqu qusur quurt re-up reepe reere reese reest repet reppe repps reprt repts repus reput reque 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 rrsps rsust ruere ruers ruete rupee ruper rupes rupse ruses ruspe russe ruste rusts rustu ruter rutte ruutu seeps seere seers seese seest seesu seete seeup sepet sept- septs septu serer seres seret serpe serps serre serse serss sert- serte serts serue serup serut seser seses sesse seste sestu sesue setee seter setse sette setts settu setup setus setut seuer seure seuss