-er bbb bbe bbg bbr bbt be- beb bee beg ber bet bez bgb bge bgg bgr bgt bgz brb bre brg brr brt brz btb bte btg btr btt btz bze bzr bzz ebb ebe ebg ebr ebt eeb eee eeg eer eet egb ege egg egr egt erb ere erg err ert erz etb ete etg etr ett etz eze ezr ezz gbe gbg gbr gbt gbz ge- geb gee geg ger get gez ggb ggg ggr ggt ggz grb gre grg grr grt gtb gte gtg gtr gtt gzr rbb rbe rbg rbr rbt re- reb ree reg rer ret rez rgb rge rgg rgr rgt rrb rrg rrr rrt rtb rte rtg rtr rtt rtz rzb rze tbb tbe tbg tbr tbt tbz te- teb tee teg ter tet tez tgb tge tgg tgr tgt tgz trb tre trg trr trt trz ttb tte ttg ttr ttt tze z-g zbb zbr zbt zeb zee zer zet zez zgb zgg zte ztr zzr zzt zzz

bbbb bbeb bbet bbrg bebb bebe beeb beeg beer beet begg bere berg berr bert bete bett betz beze breb bree breg brer bret brez brrr btrt bttb bzer bzzt bzzz ebbr eber eeee eerg eete eeze egbe egee eger eggb egge egre egte erbb erbe ereb erer eret erez erg- ergg erre ertz etbr etee eter etre ette ezer gebe geer geet geez gege gegg gerb gere gert getb gete getg gett getz ggbt gggg grbr greb gree greg gret grez grrr gtbr rbbb rbbr rebb rebe reeb reet rege regr regt rere rerg rert rete retr rett retz reze rgbe rgtr rrrr rtee tbrb teer teet teez tegg tegt ter- tere terr tete tetr tett tetz tezz tre- tree treg tret trez trge trte trtr ttbb tter tttt tzzt zber zebe zegg zerg zert zete zeze zrze zzzz

-tree bbbee be-er beber beebe beete beez begee beget begge berbe bereg beret berge berre berte berze betee beter betre bett- bette bezer breer breet breg- brege bregg brere brett bretz breze brrrr brzeg btr-t bzzzt ebber ebbet eberg ebert eeeee egger egret erbbe erber erege erere eretz erte erter etete etree etter gberg geber gebet gebre gebze geere geert geete geeze gegge gerbe gerre gertt gertz gerze getee geter gette gezer grebe greer greet grege gregg grete grett gretz grrrr rebbe rebeg reber rebet reege reere reetz reeze reger reget regge regtt rere- reree reret rerez retee reter retrg rette tbtbt teber tebet teege tegre teret terge terre tert- teter tetr- tette treer treet treg- trere trete trett ttttt tzere z-ter zberg zebre zegge zerbe zereg zerre zrbtt zzzzz

b-tree bbbbbb beebee beegee beerze beeter beezer begger berbee berber bereet berege berere berger berrer berret bertre betere betete bettee better betzet breege breere breeze breger bregge brette ebbert eebree egbere egbert eggert erbree errett etgert etrez gbegbe gebbet gebert geegee geertz geezer gegger gerber gerege gerger gerret gertte getter greete greetz greeze greger gregge gregre greter grette gteter r-tree regret reteer reteet retere retree retret retter t-tree teebee teetee teeter terete terrer terret terter tertre terzet tetete tetter treete treget tretee trette tzetze zeebee zegrze zerbet zertz zezere

bbbbbbb beetree begreet berbere bergere bergger berrett bertree betberg betbeze bettger bregger egeberg egrette gebette gee-gee gerbert greetee greeter gregger gregree grgeteg rebberg reeberg regreet reteere reterre retrete rettert terere tergett terreer terrere tettete trebez trebget treetee tregerg trettre zbereze zerbert

bbbbbbbb bebetter beerberg begetter berebere bergeret betterer erezee etbetter gerettet greegree re-beget trezerer

beebeebee eggerberg getbetter regretter tebe-tebe terbregge

bergerette betterbeer

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