rieu rige rigg rigi rigu rime rimi rimm rimu rire riri rite riti ritt ritu riue rmrg rmtu rrrr rrum rtee rtei rtmi rubb rube rubi rubu ruer ruet ruge rugg rugi ruit rumb rume rumi rumm rumt rure ruri ruru rute ruti rutt rutu tbit tbrb tebu teem teer teet tegg tegi tegt tegu teie teim teir teiu teme temu ter- tere teri term terr teru tete teti tetr tett tetu teut tibi tibu tie- tiee tiei tier tiet tige tigi tigm tigr tiit tiiu time timi timm timu tirb tire tiri tirr tiru tite titi titt titu tium tmbg tmbr tmge tmtt tre- tree treg trei trem tret treu trge tri- trib trie trig trim trit trmb trmi trmu trte trtr trub true trug trut truu ttbb tter ttim tttt tubb tube tubr tubu tuei tuer tuet tugg tugu tuig tuim tuit tuiu tumb tume tumi tumu turb ture turg turi turm turr turt turu tute tuti tutt tutu tuum u-ie ubbe ubbi uber ubet ubii ubir ubit ueir uggt ugri ugur uguu uige uirr umb- umbe umbi umer umet umit ummg umri umut urbe urbi ure- uret urge urgi urgu urib urie urim uriu urmi urre urri urte urum urur urut uter utmb utri utti uttu utug uuri uuuu

-tree bbbee be-er beber bebti beebe beeri beete beeut begee begem beget begge begti begue begum begur begut beibi beier beige beire beite bembe bemer bemet berbe bereg berei beret berge bergi berie berig berim berit beriu berme berre berri berru berte berti berum betee beter betie betim betre bett- bette betti beuer beure beute bgmut bibbe biber bibie bibri biebe biere bieri biert bieti big-i bigge bigig bigme birgi birgu birie birme birmi birum birur biter bitit bitru bitte bitti biure bmiii brebu breem breer breet breg- brege bregg breim breit breme bremm brere brett breu- bribe brieg brier brige brigg brigi brime brimm brite britt brmmm brrrr bruer bruet bruge brugg bruit bruiu brume brumm bruri brute btr-t bubbe buber buger bugge bugit bugre bugti buire bumbu bumme buret burge burgi burgu burie burim burri burru burte burtt burut buter butit butme butte butut buumi ebber ebbet ebbie eberg ebert ebibe ebure eeeee eerie eetti egger eggie eggig egrem egret eiger eirie eiter eitri embee ember embue emeer emere emerg emeri emert emigi emigr emiri emite emmer emmet emmie emtee emure erbbe erber erege erem- erere erier erimi erite eritu ermir ermit errtu erte erter ertug etete etite etree etter ettie eturu eubie eum-u eumig eurre gberg gberu gbiti geber gebet gebre gebur geere geert geete gegge geier geige geire geite geitt geiue gemer gemme gemmi gemre gerbe gerbi gerim germe germi gerre gerri gertt gerum getee getem geter getit getme gette getti gibbe gibbi giber gibi- giger gigge gigue giitu gimbi gimme gimri gimte girei girru gitie gitig gitim gitit gmeir gmiri grebe greer greet grege gregg greig greim greit greme gremi grete grett greut grgur grieg grier griet grigg grime grimm grite grrrr grubb grube gruit gruiu grume grure gruut gtube gubbe gubbi gubei guber gubru gueme guere guggi gugir guige guire guiri guite gumbe gumer gumie gummb gumme gummi gurge gurgi gurit gurre gurum gurur gutte gutti i-bet i-m-r ibbur iberg ibert ibeti ibmer iebet ieiri ierei iette iggri igigi igrim iiiee iiiii iitti imber imbue imeem imeet imgur immer immie immit imrie irbit iregi irete irime irimi irite irreg irrit itbig itbit itete itget itigi itire itmbe itter ittre ittti itu-r itu-t ituri ituru itutu iurie mbebe mbege mbere mbgbi mbiri mbret mbube mburu mbuti mebbe mebi- meemu meere meeri meete meger megir megre megri meier meimu meire meiri meite membe memer mereg merei merer meret merge meri- merie merig merir merit merre merri merte merti merur meteg meter metir metr- metre metri mette metti metur meuer meure meute mi-mi mibre miege mieum migge migme migre migue mimee mimer mimet mimir mimmi mirer miret mirge mirie mirim mirre mirri mirti miter mitie mitim mitre mitte mitti mitui mmegi mmiii mmmmm mrbig mreru mrieu mrmet mt-te mt-tg mt-ti mt-tm mt-tr mt-tt mtgee mtree mtume muger mugur muire muiri muite mumbe mumbi mumme mummu muret mureu murie murmi murre murri murru murti murum murut muter mutet mutti mutum rebbe rebeg reber rebet rebit rebut reege reeme reere reeti regem reger reget regge regie regii regme regtt regur regut reigi reime remee remer remet remi- remit remue rere- reree reret rerig rerir rerum retee retem reter retie retrg rette reuer reuet reuir reume reute reuti ribbi riber ribet ribie rieti rig-i riget rimer rimmi rimur ririe riuer rmutt rubbi rubee ruber rubie rubim ruegg ruere ruete ruger ruget rugge rugii rugir ruiru rumbe rumer rummi rummu ruter rutte ruutu tbeti tbtbt tbutt teber tebet tebi- teege teeme teemu tegbi teggi tegir tegre tegur teige tembe tembi tembu temir temri terem teret tereu terge tergu terme terre terri tert- teter tetr- tetri tette teuge tgttm ti-ti tibbi tibbu tiber tibet tibur tieit tieme tiemu tiere tieri tieut tiger tigit tigre tigri tiigi timbe timei timer timet timit timur tiree tirer tiret tirig tirit tirru tirur titer titig titii titre titte titti treer treet treg- treib treie treit treme trere treri trete trett treut tri-m tribe tribu trieb triei trier triet trieu trige trigg trime trit- trite tritt trium trubu truer trugg truit trume trute ttime ttttt tuber tubi- tubri tueie tueit tuire tuite tumbe tumbi tumbu tumut turbe turbi turbt turei turem turet turgi turie turig turit turmi turre turri turtu turut tutee tutie tutte tutti tuubi tuuei tuuri tuuru u-bit uber- ubirr ubume uggie ugrug uigur uitti umbe- umber umbre umbri umeer umeme umiri ureit ureme urger urgut uribe urite urter urubu uruit urumi ururi uruti urutu uter- uteri utier utmer utrum utter uttur utube uturu uuuuu

b-tree bbbbbb bebite beebee beebem beebug beegee beegum beembe beemer beerme beeter begbie begger begirt begrim beiber beiger beimir beirut bemeet bemete bemire bemute berbee berber bereet berege berere bergem berger bergie berime bermet berrer berret berrie bertem