b-tree bbbbbb becher bechet beebee beegee beeter begec begger behete behter berbee berber berche bereet berege berere berger berhet berrer berret berthe bertre betere betete bettee better bgtbcc brecht breech breege breere breeth breger bregge bretch brethe brette bthree ceecee cerete chebec chebet cheche cheech cheere cheget chegre cherch cheree cheret cherre cherte creche creech creete crethe ebbert ebbeth eebree eerect egbere egbert eggert erbree ercege erche- erreth errett etcetc etcher etgert ethere ethete gbegbe gebbet gebert geegee gegger gerber gerege gerger gerret gerthe gertte gether getter gheber ghebre greece greete greger gregge gregre gretch greter grethe grette gteter heberg hebete hecche hecher heebee heeger heehee heerce heeter hehehe hehheh herber herbet herceg herge herger herget herher herter herthe hetche heter- hether hetter hhgttg hrebec r-tree rebbec recche reetch regehr regret rehber rehete retche retece retech reteer reteet retere rether retree retret retter t-tree te-hee tebeth tecche techch teebee teehee teerth teetee teeter teethe tegher tercer tercet terete terrer terret terter tertre tetche tetete tethee tether tetteh tetter thebbc theche theegg thetch thetee thethe thgttg threeg threet threte thrett tr-rec trebce treche treece treete treget trehet tretee trette