b-tree bbbbbb beebee beebem beebug beegee beegum beembe beemer beerme beeter begger bemeet bemete bemute berbee berber bereet berege berere bergem berger bermet berrer berret bertem bertre berube beteem betere betete betrue bettee better betutu beumer beurre breege breere breger bregge bremer brette breuer brubru brugge bruree brutum bubber bububu bugbug bugger bugget bumbee bummer burbet burbur burgee burger burgum burree burrer burret burutu butere butter ebbert eburru eburum eebree egbere egbert eggert embree embrue embute emeere emerge emeter emeute emmert emmett emmure emuegg emurge erbree eretum ergeme errett etgert ettutu eutere g-tube gbegbe gebbet gebert geegee gegger gemert gemmer gerber gerege gereut gerger germer gerret gertte geruge getter greete greger gregge gregre greter grette grubbe gruber grugru grumet grumme gteter gubber gubeer gubgub gueber guebre guegue guerre guetre gummer gurbru gurgum gurugu guttee gutter guttur m-tree mbembe meerut meeter meetme meetre megere megerg megger megget member membre mememe memere merete mergee merger mermer mermet merrem merret merter merure meteer metrer metrum metter mettet mettur meurte muerte muette muggee mugger mugget muggur muggut muguet mugumu muguru mummer murmur murree murter mutere mutter muttur mutuum muumuu r-tree rebute regret regueb remeet remete remeue reteer reteet retere reterm retree retret retter rettur retube returu reuere reurge reuter reutte reutum rubbee rubber rubrum rubutu rugetu rugger rumber rumbur rumege rummer rurutu rutger ruttee rutter rutube t-tree t-tube teebee teemer teerme teetee teeter tembre temere terete tergum termer terrer terret terter tertre tetete tetter trebur treete treget tremet tretee trette truett trumbe tubber tugger tugrug tumer tummer tumtum turbet turgut turmer turmut turret turrum turtur tururu tuteur tutter tuttut tutume u-tube ugetme ureter urette uteute