-er eee eef eel eer ees eet ef- efe eff efl efr efs eft ele elf ell elr els elt elu ere erf erl err ers ert eru es- ese esf esl esr ess est esu ete etf etl etr ets ett etu eu- eue euf eul eur eus eut fee fef fel fer fes fet feu ffe fff ffl ffr ffs fft ffu fle flf fll flr fls flt flu fre frf frl frr frs frt fru fse fsf fsl fsr fss fst fsu fte ftf ftl ftr fts ftt ftu fue fuf ful fur fus fut fuu lee lef lel ler les let leu lfe lff lfl lfr lfs lft lfu lle llf lll llr lls llt llu lrf lrr lrs lrt lru lse lsf lsl lsr lss lst lsu lte ltf ltl ltr lts ltt ltu lue luf lul lur lus lut luu re- ree ref rel rer res ret reu rfe rff rfl rfr rfs rft rfu rle rlf rll rlr rls rlt rlu rrf rrl rrr rrs rrt rru rse rsf rsl rsr rss rst rsu rte rtf rtl rtr rts rtt rtu rue ruf rur rus rut ruu se- see sef sel ser ses set seu sfe sff sfl sfr sfs sft sfu sle slf sll slr sls slt slu sr- sre srf srl srr srs srt ss- sse ssf ssl ssr sss sst ssu ste stf stl str sts stt stu sue suf sul sur sus sut suu te- tee tef tel ter tes tet teu tfe tff tfl tfr tfs tft tfu tle tlf tll tlr tls tlt tlu tre trf trl trr trs trt tru tse tsf tsl tsr tss tst tsu tte ttf ttl ttr tts ttt ttu tue tuf tul tur tus tut tuu uee uef uel uer ues uet ufe uff ufl ufr ufs uft ufu ule ulf ull ulr uls ult ulu ur- ure urf url urr urs urt uru use usf usl usr uss ust usu ute utf utl utr uts utt utu uue uur uus uut uuu

eeee eees eefe eefl eele eels eers eese eete eets eetu efes efet effs eft- efts eftu elee elef eler eles elet elfe elfs elft elle ells ellu else elst elsu elte elts elue elul elus erel erer eres eret erfs erft erle erll erre errs erse erst ertl erts ertu erur erus esee esel eser eses eset esfs esse essl esst essu este estr ests esuf esus etee etel eter etes etfe etre etsu ette ettu euer eule eur- eure eurt euse feel feer fees feet fefe feff fele felf fell fels felt fere ferr fers fert feru fese fess fest fete fetr fets fett fetu feus ffee ffff ffrr ffss fftf flee fler fles flet flts flue fluf flur flus free fres fret frst frue fssf ft-l fter ftrs ftse ftsr fuel fuet fuff fufu fule full fuls fulu fur- fure furl furr furs furt fuse fuss fust fusu fute futs futu le-u leef leel leer lees leet lefe leff left lele lell lelu lere lert lese less lest lesu lete lets lett leur lfts llef lles llet lleu llll lrrr lrse lrst lrts ls-r lses lset lssr lsts ltee ltrs ltsr lttr luef luer lues lufe luff luft lufu lule lull lulu lure lurs lurt luse luss lust lute luts reef reel rees reet refe reff refl refr refs reft refu rele rell rels relt rere rers rert reru rese ress rest rete retr rets rett reue reuf reul reus reut reuu rfef rffl rlee rlef rleu rlls rrle rrrr rsee rsre rssl rsts rstu rtee rtes rtle rtls rtlt rtss rtts ruel ruer rues ruet rufe ruff ruft rule rull rure rurs ruru ruse russ rust rusu rute rutl ruts rutt rutu se-e se-f se-s se-t se-u seef seel seer sees seet seeu seff sefl seft sele self sell sels selt selu sere serf serr sers sert seru sese sess sest set- sete setf setl sets sett seul seur sfer sfls sfss sfsu sfts slee sler sles slet slft slre slrs slst slsu slts slue slur slut sres srtr ssee sses sset ssfl ssle sslt ssrl ssrs sssf ssss sstl ssts stee stef stel ster stes stet stfu stle stlt stre strs stru stsf stss sttr stue stuf stul stur stus stut suee suel suer sues suet sueu suf- suff sufr sufs sufu sul- sule sulf sull sult sulu sur- sure surf surr surs surt suru sus- suse suss sust susu sute sutu suus teef teel teer tees teet teff tefl teft tel- tele tell tels telt telu ter- tere terf terr ters teru tese tesl tess test tete tetr tets tett tetu teut tfrs tfss tlrs tre- tree tref tres tret treu trfr trst trte trtr true trus trut truu tses tset tsfl tsse tssf tssr tsst tsts tter ttff ttss tttt ttul tuel tuer tues tuet tufe tuff tuft tufu tule tull tulu ture turf turr turs turt turu tuss tust tute tutl tuts tutt tutu uele uell uers uess ufel ufer uffe ulee ules ulfe ulft ulle ullr ults ultt ulul ulus ure- ures uret urfe urff urft urle urls urre urse urss ursu urte urts urur urus urut usee usef usel user uses uset usfl usfs usle uslu usse ussf ussr usss usst ussu uste usts usul usus utel uter utes utsl uttu uulu uutf uuuu

-tree eeeee eeler ef-ts ef-tu efere efetf effer effet effts eftel efter efuru efuse efutu eleet elefs elele elers eless elest elets eleut ellel eller elles ellet ellul elser elses eltrs eluls elulu eluru elute erere erest erets erles erres errtu erses erste ersts erte ertel erter ertes eruts esels esere esref esrel essel esser esses essse essue estee estel ester estes estet estre estur estus esure etest etete etree etres ettel etter ettes ettle eturu euell euler eurel eurre eurus euser feele feels feere feers feese feets felet felle fells felte felts feltt ferel feres feret ferle ferr- ferre ferse ferte ferus feser