-er -th bbb bbe bbh bbr bbt be- beb bee beh ber bet bez bhb bhe bhh bhr bht brb bre brh brr brt brz btb bte bth btr btt btz bze bzh bzr bzz ebb ebe ebh ebr ebt eeb eee eer eet ehb ehe ehh ehr eht erb ere erh err ert erz etb ete eth etr ett etz eze ezh ezr ezz hbb hbe hbh hbr hbt hbz he- heb hee heh her het hez hhb hhe hhh hhr hht hhz hr- hrb hre hrh hrr hrt hrz htb hte hth htr htt htz hze hzt rbb rbe rbh rbr rbt re- reb ree reh rer ret rez rh- rhb rhe rhh rhr rht rrb rrh rrr rrt rtb rte rtr rtt rtz rzb rze tbb tbe tbh tbr tbt tbz te- teb tee teh ter tet tez th- thb the thh thr tht thz trb tre trh trr trt trz ttb tte tth ttr ttt tze zbb zbr zbt zeb zee zeh zer zet zez zhe zhr zrh zte ztr zzr zzt zzz

bbbb bbeb bbet bebb bebe beeb beer beet behr bere berr bert bete beth bett betz beze bher bhet bhrt breb bree brer bret brez brrr btrt bttb bzer bzzt bzzz ebbr eber eeee eete eeth eeze eheh eher ehre ehte erbb erbe ereb erer eret erez erre erth ertz etbr etee eter eth- ethe etre ette ezer hebb hebe hebr heeb heer heet hehe herb here herr hert herz hete heth hett hetz heze hhhh hree hrtb hrte htet httr rbbb rbbr rebb rebe reeb reet rehb rehe reht rere rert rete reth retr rett retz reze rezh rheb rhee rhet rrrr rtee tbrb teer teet teez tehr ter- tere terr tete teth tetr tett tetz tezz the- theb thee ther thet thre thtb thtr tre- tree tret trez trte trtr ttbb tter tttt tzzt zber zebe zert zete zeze zhee zrze zzhz zzzz

-tree bbbee be-er beber beebe beete beeth beez beher behet berbe bereh beret berhe berre berte berth berze betee beter bethe betre bett- bette bezer bheer breer breet brere breth brett bretz breze brrrr btr-t bzzzt ebber ebbet ebert eeeee ehret erbbe erber erere eretz erte erter erthe etete ether etree etter h-e-b he-he hebbe hebe- heber heere heete heeze hehte herez herre herte herth hertz heter hethe hette hheth hhhhh hrere hthrt htree rebbe reber rebet reere reerh reeth reetz reeze reher rehet rere- reree reret rerez retee reter rethe rette rhett tbtbt teber tebet teeth tehee teret terre tert- teter tethe tetr- tette thebe theeb theer ther- there thete theth theze thre- three thret treer treet trere trete trett ttttt tzere z-ter zebre zeher zerbe zerre zrbtt zzzzz

b-tree bbbbbb beebee beerze beeter beezer behete behter berbee berber bereet berere berhet berrer berret berthe bertre betere betete bettee better betzet bezeth breere breeth breeze brethe brette bthree bzhete ebbert ebbeth eebree eez-eh erbree erreth errett ethere ethete etrez hebete heebee heehee heeter hehehe hehheh herber herbet herher herter herthe heter- hether hetter hetzer hezreh r-tree rehber rehete reteer reteet retere rether retree retret retter t-tree te-hee tebeth teebee teehee teerth teetee teeter teethe terete terrer terret terter tertre terzet tetete tethee tether tetteh tetter thetee thethe threet threte thrett treete trehet tretee trette tzetze zeebee zehrer zerbet zertz zezere

bbbbbbb beetree beheter berbere berehet berrett berther berthet bertree betbeze bethere betterh betteth betther brether erbherr ethbete hebert hee-hee herbere herbert herrere reteere reterre retrete rettert tee-hee teether tehzeeb terere terreer terrere tettete thebeeb thether threete threeth thrette trebez treetee trettre zbereze zerbert

bbbbbbbb bebetter beheeter berebere betterer erezee etbetter herbetet herehere het-hert treberth trezerer

beebeebee bettereth tebe-tebe thetttttt

betterbeer therethere treherbert

thethethethe

bbbbbbbbbbbbbbb bzzzzzzzzzzzzzz

hhhhhhhhhhhhhhhhhhhhh