-er bbb bbe bbm bbr bbs bbt bbx be- beb bee bem ber bes bet bex bmb bme bmm bmr bms bmt bmx brb bre brm brr brs brt brx bsb bse bsm bsr bss bst bsx btb bte btm btr bts btt btx bxb bxm bxx ebb ebe ebm ebr ebs ebt ebx eeb eee eem eer ees eet eex em- emb eme emm emr ems emt emx erb ere erm err ers ert es- esb ese esm esr ess est esx etb ete etm etr ets ett etx ex- exe exr exs ext exx m-r mbb mbe mbm mbr mbs mbt mbx meb mee mem mer mes met mex mmb mme mmm mmr mms mmt mmx mrb mre mrm mrr mrs mrt mrx msb mse msm msr mss mst msx mtb mte mtm mtr mts mtt mtx mxr mxs rbb rbe rbm rbr rbs rbt rbx re- reb ree rem rer res ret rex rmb rme rmm rmr rms rmt rmx rrb rrm rrr rrs rrt rsb rse rsm rsr rss rst rsx rtb rte rtm rtr rts rtt rtx rxr rxs sbb sbe sbm sbr sbs sbt sbx se- seb see sem ser ses set sex smb sme smm smr sms smt smx sr- srb sre srm srr srs srt srx ss- ssb sse ssm ssr sss sst ssx stb ste stm str sts stt stx sxm sxs sxt t-x tbb tbe tbm tbr tbs tbt te- teb tee tem ter tes tet tex tmb tme tmm tmr tms tmt tmx trb tre trm trr trs trt trx tsb tse tsm tsr tss tst tsx ttb tte ttm ttr tts ttt ttx txe txs txt xbe xbr xbx xee xem xer xes xet xex xmm xmr xms xmt xmx xrt xrx xsb xsm xss xst xtm xtr xts xtx xxx

bbbb bbbs bbeb bbet bebb bebe beeb beem beer bees beet beme bere berm berr bers bert bes- bese besm bess best bete bets bett bmts breb bree brem brer bres bret brex brrm brrr brrs brsb brsr brst bseb bsee bser bses bset bsms bsmt bsrm bsse bssm bsts btex btrt btss bttb ebbr ebbs eber ebes eeee eees eems eers eese eete eets eext embe embr embs emer emes emet emex emme emms emre emrs emse emst emte emts er-x erbb erbe ereb erem erer eres eret erme erms erre errs erse erst erts esbs esee esem eser eses eset esme esmr esmt esse esst este estr ests etbr etee etem eter etes etre etrm ette exer exes exmr exrx exte extr exts mbbs mbes mbms mbrs mebe meem meer mees meet meme memr mems memx mer- merb mere merm mers mert mes- mese mesr mess mest met- mete mets mett mexx mmes mmmm mmms mmse mmst mmts mmxx mrbb mrbm mrbs mreb mree mres mrse mrtm mrts mrtt msee msem msex msmb msmm msms msrb msrt mssm mssr msst mstr msts mtbs mtre mtrr mtss mtst mttr mtts rbbb rbbr rbbs rbms rbmx rbss rbst rebb rebe rebs reeb reem rees reet reme rems rere rers rert rese ress rest rete retr rets rett rexx rmbs rmst rrrr rsee rsme rsmx rsre rsts rtee rtes rtex rtms rtss rtts rxes sbbs sber sbse sbst se-e se-s se-t se-x sebe sebs sebt seeb seem seer sees seet seex seme sems serb sere serm serr sers sert sese sess sest set- sete sets sett setx sex- sexe sext smbe smeb smee smet smrt smss smte sreb srem sres srtr ssbr ssee ssem sses sset ssex ssrm ssrs sssb sssm ssss sstb ssts stbs stee stem ster stes stet stex stms stmt stre strs stsm stss sttr tbbs tbrb tbst teem teer tees teet teme tems ter- tere term terr ters tese tess test tete tetr tets tett tetx text tmbr tmtt tre- tree trem tres tret trex trmb trms trst trte trtr tses tset tsse tssm tssr tsst tstm tsts ttbb tter ttms ttss tttt txtr xbee xeer xeme xer- xers xert xexe xmms xtbs xtsr xxxx

-tree bbbee bbser be-er beber bebes beebe beebs beers beest beete beets bembe bemer bemet berbe beres beret berme berms berre berse berte berts besee besem beset besme besse beste bests betee beter betes betre betrs bett- bette betts bmrst bmxer bre-x breem breer brees breet breme bremm brems brere brers brese bress brest brets brett bretx brmmm brmsx brrrr btr-t bttms ebber ebbet ebers ebert eeeee embee ember emeer emere emert emese emmer emmet emtee erbbe erber erebs erem- erere erest erets ermes erres erses erste ersts erte erter ertes esere esmes esser esses essex essse estee ester estes estet estre etest etete etext etree etres etter ettes exeem exeme exert exmes exmet exter extre extts m-set mbebe mbere mbres mbret mebbe meees meems meere meers meese meest meete meets membe memer memes memex merer meres meret merms merre merse merss merte mesee mesem meses messe meste meter metes metr- metre metrx metse mette metts mexer mmmmm mrmet mt-te mt-tm mt-tr mt-tt mtree rebbe reber rebet rebts reeme reere reese reest remee remer remet remex remse rere- reree reres reret resee reses reset resse reste restr rests retee retem reter retes retex rette retts rexer rexes rtems rtext sebbe sebes sebet seebe seeem seeme seems seere seers seese seest seete semee semes semet semex semme serbs serer seres seret serme serre serse serss sert- serte serts seser seses sesse seste setee setem seter setme setse sette setts sexer sexes sexst sext- sexte sexts smees smeet smere smert smets sssrb sssss steem steer stees steet stemm stems stere sterr sters stert stete stets strbe streb stree strem stret strrs strsm t-rex tbtbt teber tebet teebs teeme teems teers teese teest teets tembe temes temse terem teres teret terex terme terms terre terrs terse tert- tesem tesse teste tests teter tetes tetex tetr- tette texte texts treer trees treet treme trere tres- trese tress trest trete trets trett trexs tsebe tsere tsets tsmmr ttest ttttt xbxrx xemes xerem xeres xerse