-er bbb bbe bbg bbr bbt be- beb bee beg ber bet bev bez bgb bge bgg bgr bgt bgv bgz brb bre brg brr brt brv brz btb bte btg btr btt btv btz bvb bve bvg bvr bvt bvv bze bzr bzz ebb ebe ebg ebr ebt ebv eeb eee eeg eer eet eev egb ege egg egr egt erb ere erg err ert erv erz etb ete etg etr ett etv etz evb eve evg evr evt evv eze ezr ezz gbe gbg gbr gbt gbv gbz ge- geb gee geg ger get gev gez ggb ggg ggr ggt ggv ggz grb gre grg grr grt grv gtb gte gtg gtr gtt gtv gvb gve gvg gvr gvt gzr rbb rbe rbg rbr rbt re- reb ree reg rer ret rev rez rgb rge rgg rgr rgt rgv rrb rrg rrr rrt rtb rte rtg rtr rtt rtv rtz rvb rve rvg rvr rvt rvv rzb rze tbb tbe tbg tbr tbt tbv tbz te- teb tee teg ter tet tev tez tgb tge tgg tgr tgt tgv tgz trb tre trg trr trt trv trz ttb tte ttg ttr ttt ttv tvb tve tvg tvr tvt tvz tze v-e vbg vbr vbv vbz veb vee veg ver vet vez vgg vgr vgt vgz vrb vre vrg vrr vrt vtb vte vtg vtr vtt vtv vtz vvb vvg vvr vvt vvv vvz z-g zbb zbr zbt zbv zeb zee zer zet zev zez zgb zgg zgv zte ztr ztv zzr zzt zzz

bbbb bbeb bbet bbrg bebb bebe beeb beeg beer beet begg bere berg berr bert bete bett betv betz bevz beze breb bree breg brer bret brev 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 erev erez erg- ergg erre ertz erve etbr etee eter etre ette ever evet evre ezer eztv gebe geer geet geez gege gegg gerb gere gert getb gete getg gett getz geve ggbt gggg grbr greb gree greg gret grev grez grrr grve gtbr gvtv gvvv rbbb rbbr rebb rebe reeb reet reev rege regr regt rere rerg rert rete retr rett retz reve reze rgbe rgtr rrrr rtee rtve rver tbrb teer teet teev teez tegg tegt ter- tere terr tete tetr tett tetz tezz tre- tree treg tret trev trez trge trte trtr ttbb tter tttt tver tvrr tvtv tzzt vbrg veer veet vege ver- verb vere vert vete vetr veve veze vezt vret vver vvvv zber zebe zegg zerg zert zete zeve zeze zrze zzzz

-tree bbbee be-er beber beebe beete beeve beez begee beget begge berbe bereg beret berge berre berte berze betee beter betre bett- bette bever bezer breer breet breg- brege bregg brere brett bretz breve breze brrrr brzeg btr-t bzzzt ebber ebbet eberg ebert eeeee eevee eever egger egret erbbe erber erege erere eretz ereve erte erter etete etree etter evere everg everr evert evete evett eveve gberg geber gebet gebre gebze geere geert geete geeze gegge gerbe gerre gertt gertz gerve gerze getee geter gette gettv gever gezer gezve grebe greer greet grege gregg grete grett gretz greve grrrr rebbe rebeg reber rebet reege reere reetz reeve reeze reger reget regev regge regtt rere- reree reret rerez retee reter retrg rette rever revet rtrev tbtbt teber tebet teege tegre teret terge terre tert- terve teter tetr- tette tevet tevez treer treet treg- trere trete trett treve ttttt tzere veber vebre veere veeve veeze veget vegre vereb verge vergt verre verte verve verze vette vever vezet z-ter zberg zebre zegge zerbe zereg zerre zevre zrbtt zzzzz

b-tree bbbbbb beebee beegee beerze beeter beever beezer begger berbee berber bereet berege berere berger berrer berret bertre betere betete bettee better betzet breege breere breeze breger bregge brette brever brevet ebbert eebree egbere egbert eggert erbree errett etgert etrez everte evertz gbegbe gebbet gebert geegee geertz geezer gegger gerber gerege gerger gerret gertte getter geveze greete greetz greeve greeze greger gregge gregre greter grette gteter r-tree reever regret reteer reteet retere retree retret retter reverb revere revert revver t-tree teebee teetee teeter teevee ter-gv terete terrer terret terter tertre terzet tetete tetter tevere treete treget tretee trette trevet tzetze vebret veerer vegete veretz vergee verger verree verrer verret vertre verver vervet verzee vetere vetter vvvvvv zeebee zegrze zerbet zertz zezere zverev

bbbbbbb beetree begreet berbere bergere bergger berrett bertree betberg betbeze bettger bregger egeberg egrette errevet everett g-breve gebette gee-gee gerbert greetee greeter greever gregger gregree grgeteg rebberg reeberg regreet reteere reterre retrete rettert reveree reverer reverze revette terere tergett terreer terrere tettete trebez trebget treetee tregerg trettre treveer verbere vergeer vergeze verrett verveer zbereze zerbert

bbbbbbbb bebetter beerberg begetter berebere bergeret betterer breveter erezee etbetter everberg everette gerettet greegree re-beget reverber revertee reverter trezerer vergerer vergette verteber vertebr- vertebre vertregt vezere

beebeebee eggerberg getbetter regretter tebe-tebe terbregge

bergerette betterbeer terreverte zetterberg

terre-verte

bbbbbbbbbbbbbbb bzzzzzzzzzzzzzz grrrrrrrrrrrrrr