ieet ieie iere ieri iett igbc igcc iger iget igri igue iiie iiii iiit iirc iitr iitt iiuc irbe ircc ircg ircu iree irer iri- iric irie irig irrc irre irri irte irti itbe itec iter itet itgc itic itie itri itur iucc iuce iuge iuiu rbbb rbbr rcbc rccb rccc rcet rcgc rcic rcrg rctc rctg rcti rebb rebe rebu recc rece reci recr rect recu reeb reet rege regi regr regt regu reii reir reit reiu rere rerg reri rert reru rete reti retr rett reue reut reuu rgbe rgbi rgit rgtr rib- ribe ribu ricc rice rict rier riet rieu rige rigg rigi rigu rire riri rite riti ritt ritu riue rrrr rtcc rtce rtcg rtee rtei rubb rube rubi rubu ruce ruci ruct ruer ruet ruge rugg rugi ruit rurc rure ruri ruru rute ruti rutt rutu tbcb tbcc tbce tbit tbrb tccc tccu tctc tebu tecr tect teec teer teet tegg tegi tegt tegu teic teie teir teiu ter- terc tere teri terr teru tete teti tetr tett tetu teut tgcc tgtc tibi tibu ticc tice tie- tiee tiei tier tiet tige tigi tigr tiit tiiu tirb tire tiri tirr tiru titc tite titi titt titu trcc tre- trec tree treg trei tret treu trge tri- trib tric trie trig trit trtc trte trtr trub truc true trug trut truu ttbb tter tttt tubb tube tubr tubu tucc tuei tuer tuet tugg tugu tuig tuit tuiu turb turc ture turg turi turr turt turu tute tuti tutt tutu u-ie ubbe ubbi uber ubet ubic ubii ubir ubit ucbc ucci ucrc ucut ueir ugcc ugcg uggt ugri ugur uguu uige uirr urbe urbi urci ure- uret urge urgi urgu urib uric urie uriu urre urri urte urur urut utec uter utri utti uttu utug uuri uuuu

-tree bbbee be-er beber bebic bebti becic beciu becue becut beebe beeri beete beeut begee beget begge begic begti begue begur begut beibi beice beier beige beire beite berbe bercu berec bereg berei beret berge bergi berie berig berit beriu berre berri berru berte berti betee beter betie betre bett- bette betti beuer beure beute bibbe biber bibic bibie bibri bicer biebe biere bieri biert bieti big-i bigge bigig birgi birgu birie birur biter bitit bitru bitte bitti biure brebu brece breer breet breg- brege bregg breit brere brett breu- bribe brice briec brieg brier brige brigg brigi brite britt brrrr bruce bruer bruet bruge brugg bruit bruiu bruri brute btc-e btr-t bubbe buber bucci bucet bucic bucie bucur buger bugge bugit bugre bugti buici buire burcu buret burge burgi burgu buric burie burri burru burte burtt buruc burut butec buter butit butte butut c-tec ccccc cccii ccett cciii ccitt cebec ceber cebit ceci- cecie cecri ceere cegge cegui ceirt cerbu cerc- cerce cerci cerec cerer ceret cerge ceric cerie cerre certe cetic cette ceuti ciber cibir cicer ciceu cietc circe cirge ciric cirie cirr- cirri citec citee citer citie citr- citte ciuti crebe crece creer cregg crete cretu creu- creue cribb cribe crice crier cruce cruet crure ctree ctrie cttee cubbe cubeb cuber cubi- cubic cubie cubit cubub cucei cucui cugir cuire cuite curbi curce curer curet curic curie curig curre curri curti curug cutcu cutee cuter cuti- cutie cutit ebber ebbet ebbie eberg ebert ebibe ebure ecrit eeeee eerie eetti egger eggie eggig egret eiger eirie eiter eitri erbbe erber erceg erect erege erere ericb erice erier eriic erite eritu errtu erte erter ertug eruct etete etite etree etter ettie eturu eubie eucre euric eurre gberg gberu gbiti gciii geber gebet gebre gebur geere geert geete gegge gegic geier geige geire geite geitt geiue gerbe gerbi gerce gerre gerri gertt getee geter getic getit gette getti gibbe gibbi giber gibi- giger gigge gigue giitu girei giric girru gitic gitie gitig gitit grbic grcic grebe grece greci grecu greer greet grege gregg greig greit grete grett greut grgic grgur grice grieg grier griet grigg grite grrrr grubb grube gruit gruiu grure gruut gtube gubbe gubbi gubei guber gubru gucci guce gucer guere guggi gugir guige guire guiri guite gurge gurgi gurit gurre gurur gutic gutte gutti i-bet ibbur iberg ibert ibeti icbrr ice-t iceci iceit icici icier icter ictic icube iebet iecee ieiri ierei iette iggri igigi iiiee iiiii iitti irbit ircii irece iregi irete irite irreg irrit irtec itbig itbit itete itget itigi itire itter ittre ittti itu-r itu-t ituri ituru itutu iurie rcirc rebbe rebec rebeg reber rebet rebit rebut recce recet recit rect- recte recti recue recur recut reece reege reere reeti regec reger reget regge regie regii regtt regur regut reice reigi rere- reree reret reric rerig rerir retee reter retie retrg rette reuer reuet reuir reute reuti ribbi ribce riber ribet ribie ricci ricer riceu rieti rig-i riget ririe riuer rtice rubbi rubee ruber rubie rucci rucer ruegg ruere ruete ruger ruget rugge rugii rugir ruiru rurec ruric ruter rutic rutte ruutu tbeti tbtbt tbutt teber tebet tebi- tecic tectb teege tegbi teggi tegic tegir tegre teguc tegur teige terce teret tereu terge tergu terre terri tert- teter tetr- tetri tette teuge ti-ti tibbi tibbu tiber tibet tibur ticci ticer tieit tiere tieri tieut tigcc tiger tigit tigre tigri tiigi tiree tirer tiret tirig tirit tirru tirur titcr titer titig titii titre titte titti treer treet treg- treib treie treit trere treri trete trett treut tribe tribu trice trieb triei trier triet trieu trige trigg trit- trite tritt trubu truce truer trugg truit trute ttttt tuber tubi- tubri tucci tucet tuctu tueie tueit tugce tuire tuite turbe turbi turbt turei turet turgi turic turie turig turit turre turri turtu turut tutee tutie tutte tutti tuubi tuuei tuuri tuuru u-bit u-cee uber- ubirr uggie ugric ugrug uigur uitti urbic ureic ureit urger urgut uribe uric- urite urric urter urubu uruce urucu uruit ururi uruti urutu uter- uteri utier utter uttur utube uturu uuuuu

b-tree bbbbbb bebite becice becure beebee beebug beegee beeter begbie begec begger begirt beiber beiger beirut berbee berber bereet berege berere berger