ktrb ktre ktrg ktri ktrk ktrp ktrr ktrt kttg ktti kttk kttp kttr kttt pbpk peek peep peer peet pegg peip peir peit peke peki pekk pepe pepi per- pere perg peri perk perp perr pert pete peti petr pett pger pgib pibb pibi piep pier piet pigb pigg pigk pigp pigt piip pike piki pikk pikt pipe pipi pipp pire pirg piri pirk pirr pite piti pitr pitt pkge pkib pkig pper ppgi ppib ppie ppig pppp pptt pre- preb pree preg prek prep pret pri- prie prig prii prri prti prtp prtr pter pttk rbbb rbbr rebb rebe rebk reeb reek reep reet rege regi regr regt reii reik reir reit reke reki rekt repe repi repp repr rept rere rerg reri rert rete reti retr rett rgbe rgbi rgit rgtr rib- ribe riek riep rier riet rige rigg rigi rike riki rikk ripe ripi ripp ripr ript rire riri rite riti ritt rpet rpii rrrr rtee rtei rtkg rttp tbit tbrb tbtp teek teer teet tegg tegi tegt teie teip teir teke tepe tepi tepp ter- tere teri terk terp terr tete teti tetr tett tibi tie- tiee tiei tiep tier tiet tige tigi tigr tiit tike tiki tip- tipe tipi tipp tipt tirb tire tiri tirr tite titi titp titt tkip tkkg tpbg tpeg tper tpir tpke tppp tppr tpte tptp tptr tre- tree treg trei trek tret trge tri- trib trie trig trik trip trit trpe trpg trpp trte trtr ttbb tter ttkg tttt

-tree b-r-k bbbee be-er bebek beber bebti beebe beeke beepi beeri beete begee beget begge begti beibi beier beige beire beite beker bekir bekke bekti beppe berbe bereg berei berek beret berge bergi berie berig berit berk- berke berre berri berte berti betee beter betie betke betre bett- bette betti bibbe biber bibie bibri biebe bieke biere bieri biert bieti big-i bigge bigig biker bikie bipib birgi birie bitek biter bitit bitki bitte bitti bkite breek breer breet breg- brege bregg breik breit breke brere brett bribe brieg brier brige brigg brigi brike brite britt brrrr btr-t ebber ebbet ebbie eberg ebert ebibe ebike eeeee eepee eerie eerik eetti egger eggie eggig egrek egret eiger eiker eipri eirie eiter eitri ekbir ekker eppie epptb erbbe erber erege erept erere erier erite erkki erte erter eteke etete etike etite etree etrek etter ettie gbeke gberg gbiti gbpee geber gebet gebke gebre geere geert geete gegge geier geige geire geite geitt gepir gerbe gerbi gerik gerke gerre gerri gertt getee geter getik getit gette getti gibbe gibbi giber gibi- giger gigge gikii gippe gippi girei girik gitie gitig gitit grebe greek greer greet grege gregg greig greip greit grepe grete grett grieg grier griet grigg grike gripe gript grite grrrr gtk-- i-bet i-rtk iberg ibert ibeti ibrik iebet ieiri iepe ieper ierei iette iggri igigi iiiee iiiii iitti ikbke ikbkg ikeep ikire ipeti ipiti ippee ippei irbit iregi irete iriki irite irker irreg irrep irrit itbig itbit itete itget itigi itire itpkb itrip itter ittre ittti k-gee k-p-r k-t-b kebbe kebek keber kebir keepe keere keeri keget keiki keipi keire keiri keitt kekri kepie keppe kerei kerek kerep keret kerie kerik kerre kerri ketek keter ketib kette ketti kgrip kibbe kibbi kibei kibet kibi- kieke kiger kiiki kikki kipke kirgi kirie kirke kirki kirpi kirre kitee kiter kitir kitki kitte kitti krbpe kreek kreep kreke kreki krepe krete kribi krieg kriek krier krige krike kriti p-rep pebi- pebie pebre peege peeke peere peeri peert peete peire peirt peket pekre pepee peppe peppi pept- perer peret perge peri- perie perit perke perki perre perri perte perti petbe peter petie petit petr- petre petri pette petti pgrep piere pieri pierk piert pigge pigit piibe piiri piker pikit pikke piper pipet pipge pipit pippi pipri pirie pirke pirre pirri piter pitie pitip pitre pitri pitti pre-k preie preik preke preki prepg prete preti prier priit prite priti pritt pter- ptere pteri ptprb ptpre ptprg ptprk ptprr ptprt rebbe rebeg reber rebet rebit reege reepe reere reeti reger reget regge regie regii regtt reiek reigi reike reiki rekke repeg repet repit reppe reprt rere- reree reret rerig rerik rerip rerir retee reter retie retip retki retrg rette ribbi riber ribet ribie rieti rig-i riget rikei riker rikki riper ripit rippe ririe ritek rripe rt-rk tbeti tbtbt teber tebet tebi- teege teepe tegbi teggi tegir tegre teige teiki teket tekir tekke tekki tekpi tekti tepee tepet tepit tepke terek teret terge terki terre terri tert- teter tetr- tetri tette ti-ti tibbi tiber tibet tieit tieke tiere tieri tierp tiger tigit tigre tigri tiigi tikei tiket tikit tikki tikri tiper tipet tipit tippi tiree tirer tiret tirig tirit titer titig titii titik titre titte titti tkiet tkirk tpike treer treet treg- treib treie treip treit trepp trept trere treri trete trett tribe trieb triei trier triet trige trigg triip trike triki trikk tripe tripi tripp tript trit- trite tritt trpik ttttt

b-tree bbbbbb bebite beebee beegee beeker beeper beeter begbie begger begirt begrip beiber beiger bekker berbee berber bereet berege bereke berere berger bergie berker berrer berret berrie bertie bertre betere betete betire bettee better bettie bettik bibber biberg bibiri bibrik bieber bierge bigbee bigbet bigger biggie biggit bigrig bigtip bikker birger birgit birgte biribi biripe birket birkie biteit bitier bitrig bitter bittie breege breere breger bregge breite brekke brette bribe- bribee briber bribir bribri brigge brigit brikke e-bike ebbert ebr-ii ebrie eebree eerier egbere egbert egegik egerie eggert eggier eibert eirigi ekberg epigee erbree erebti errett etgert etiger gbegbe gebbet gebbie gebbit gebert geegee gegger geggie geiger geikie gekker gerber gerege gereri gergei gerger gerret gerrie gerrit gertie gertte getter gettie gibber gibbet gibbit gibert gibett gibier gibret gierek gierke gietki gigger gigget giggit gigiri gipper gitige gitter gittie grebki greeki greete greger gregge gregre greige greter grette griebe griege grigri griper grippe gteter i-bere i-bete i-tree igbere igbeti igeret igetit igreet ikette ikkeri ipeter irrite ittiri k-tree kebber kebbie kebrit keeker keeper keepit keerie keerti kegger keiter