b-tree bbbbbb bebite beebee beegee beeter begbie begger begirt beiber beiger berbee berber bereet berege berere berger bergie berrer berret berrie bertie bertre betere betete betire bettee better bettie betwit bewire bewter bibber biberg bibiri bieber bierge bigbee bigbet bigger biggie biggit bigrig bigwig birewe birger birgit birgte biribi biteit bitier bitrig bitter bittie biwere biwite biwiti breege breere breger bregge breite brette brewer brewet brewit bribe- bribee briber bribir bribri brigge brigit bweiti ebbert ebr-ii ebrie eebree eerier egbere egbert egerie eggert eggier eibert eirigi erbree erebti errett etgert etiger ewerer gbegbe gebbet gebbie gebbit gebert geegee gegger geggie geiger gerber gerege gereri gergei gerger gerret gerrie gerrit gertie gertte gerwig getter gettie getwet gibber gibbet gibbit gibert gibett gibier gibret gigger gigget giggit gigiri gitige gitter gittie greete greger gregge gregre greige greter grette griebe griege grigri gteter gwbert gwereg gwerre gwrite i-bere i-bete i-tree igbere igbeti igeret igetit igreet irrite ittiri itwere r-tree rebbit rebite rebrew regeti reggie regret regrew reiber reiter reteer reteet retere retire retree retret retrig retter rettig rewere rewire ribber ribbet ribbie ribbit ribibe ribier rieber rieger rieter riette rietti rigett rigger rigget rititi ritter t-tree te-wit tebbit teebee teetee teeter teewit teirei terete teribe terrer terret terrie territ terter tertre tetete tetter tibbit tiber- tibere tiberi tibert tibeti tibiri tibrie tierer tieret tiete tietie tiewig tigger tirret tirrit tirwit titbit titiri tittee titter tittie treete treewe treget tregew tretee tretie trette trewit tribit triger trigit triibe triigi triter twibit webber webbie webbii weebit weegee weegie weerie weewee wegert weiete weiter weiwei wereit werrei werrie werrit wertew wetere weteri wetter wettig wewere wiberg wieger wietie wigert wigger wirier wirrie witege wittee witter wittig wreitt wrette writee writer