-er bbb bbd bbe bbf bbr bbt bdb bdd bde bdf bdr bdt be- beb bed bee bef ber bet bfb bfd bfe bff bfr bft brb brd bre brf brr brt btb btd bte btf btr btt dbb dbd dbe dbf dbr dbt ddb ddd dde ddf ddr ddt de- deb ded dee def der det dfb dfd dfe dff dfr dft drb drd dre drr drt dtb dtd dte dtf dtr dtt ebb ebd ebe ebf ebr ebt ed- edb edd ede edf edr edt eeb eed eee eef eer eet ef- efb efd efe eff efr eft erb erd ere erf err ert etb etd ete etf etr ett fbb fbd fbe fbf fbr fbt fdb fdd fde fdf fdr fdt feb fed fee fef fer fet ffd ffe fff ffr fft frb frd fre frf frr frt ftb ftd fte ftf ftr ftt rbb rbd rbe rbf rbr rbt rdb rdd rde rdf rdr rdt re- reb red ree ref rer ret rfb rfd rfe rff rfr rft rrb rrd rrf rrr rrt rtb rtd rte rtf rtr rtt tbb tbd tbe tbf tbr tbt tdb tdd tde tdf tdr tdt te- teb ted tee tef ter tet tfb tfd tfe tff tfr tft trb trd tre trf trr trt ttb ttd tte ttf ttr ttt

bbbb bbdd bbeb bbet bd-r bebb bebe bede beeb beed beef beer beet befe beff beft berd bere berr bert bete bett bftt brdt breb bred bree bref brer bret brrr btdt btrt bttb dbtt dddd ddre debe debt dedd dede deeb deed deef deer deet defe deff deft der- derb dere derf derr dete detr dfdt dfer dfrf dftr dred dree dref dret dted ebbr ebed eber edde ede- eder eede eeee eefe eete efbr efet eft- erbb erbe erde erdf ereb ered erer eret erft erre etbr etee eter etfb etfe etre ette fede feeb feed feer feet fefe feff ferb ferd fere ferr fert fete fetr fett ffee ffff ffrr fftf fred free fret fter rbbb rbbr rder rebb rebe redd rede redr reeb reed reef reet refd refe reff refr reft rerd rere rert retd rete retr rett rfef rred rrrr rtbf rtdt rtee rtfb tbrb tddb tdff tedd tede teed teef teer teet teff teft ter- tere terf terr tete tetr tett tfeb tre- tred tree tref tret trfd trfr trte trtr ttbb tter ttff tttt

-tree b-e-d bbbee bd-re be-er bebed beber bedde bedee beder bedet beebe beede beeft beerd beete beffe berbe berde bered beret berre berte betee beter betre bett- bette bredd brede bredt breed breef breer breet brerd brere brett brrrr btr-d btr-t ddddd debed deber debet debte debtf dedde dedee deder deede deefe deeff deere defed defer defet deffe derbe derde dered derre deter detre dette drdre dredd drede dreed dreff dreft drere e-dee ebbed ebber ebbet ebert edder eddre edere edred eeeee eefde eerde efere efetf effed effer effet efter erbbe erber erdre erede erere erfde erred erte erter etete etree etter febre fedde fedee feder feere ferde fered feret ferr- ferre ferte feted feter fette frede freed freer freet frere frett ftrtt rebbe reber rebet redbd redde reder reede reefe reeft reere refdb refed refer refet reffe rerde rere- reree reret reted retee reter rette tbtbt teber tebet tedef teder teerd tefe teret terre tert- teter tetr- tette treed treer treet trefe treff trere trete trett ttttt

b-tree bbbbbb bedded bedder bedebt beebee beedee beefed beefer beerde beeter befree befret berbee berber berede bereet bereft berere berrer berret bertre betere betete betted bettee better bredde breded breder breede breefe breere brette dbette de-err debdeb debefe debere debert debete debret debted debtee deeded deedee deeder defete deffer defter derere derfde derrer deterr detete detter dreder ebbert eebree effere effete efreet efter- erbree errett fedder federd feeded feedee feeder feered ferber ferder ferede ferfer ferred ferrer ferret fertee ferter fetter freedb frefre frette fterer fterre r-tree rebred redbed redded redder redere redred redted reeded reeder reefed reefer reeffe refeed refeet refeff refert refete reffed refret refter reteed reteer reteet retere retree retret retted retter t-tree tedded tedder teebee teeder teetee teeter terete terrer terret terter tertre tetede tetete tetter treder treete trefet trefte tretee trette

bbbbbbb be-free beddred bedered bedfere beetred beetree berbere berefet bereted berrett bertree betfred breeded breeder brerded debrete debrett deedeed deffete derrett deterre drebber eddered federed federer ferebee ferrere fredebb fredfet freebee freeter fretted fretter rebreed redbeet reddeer reddere reedbed refered referee referer refrete reftted rerefer reteere reterre retrete rettert terere tereted terreer terrere tettete treetee trettre

bbbbbbbb bebetter bed-fere bederede beedered befetter berebere betbeder bettered betterer deferred deferrer deffered deterred deterrer etbetter federbet ferreted ferreter ferrette fettered fetterer freebeer red-deer redberet reddeber reed-bed reedreed refereed referred referree referrer teddered teetered tettered treefree

beebeebee ddddddddd dereferer federe free-reed tebe-tebe

befettered betterbeer betterbred debbeebbed ferretfeet rereferred

bbbbbbbbbbbbbbb redderdeererred