bbbbbb beebee beebug beefer beegee befree begbie begger beiber beiger berbee berber berege berere berger bergie berrer berrie berube beruri beurre bibber biberg bibiri bibiru biburg bieber bierge bigbee bigger biggie bigrig birger biribi breefe breege breere breger bregge breuer bribe- bribee briber bribir bribri briefe brigge brigue brubru brugge bruree bubber bububu buffer bugbug bugger buggie bugiri buguri burbur buregi burfee burgee burger burgui burier burree burrer burrie bururi ebr-ii ebrie eburru eebree eerier effeir effere egbere egerie eggier eirigi er-rif erbree euerie febri- feerie feifer feirie ferber ferfer fergee fergie ferier ferrer ferri- ferrie ferrur fibber fieber fiebre fiefie figger figuig figure fiuggi frebie frefre freire freure fugger furber furfie furfur furrer furrfu gbegbe gebbie geegee gegger geggie geiger gerber gerege gereri gergei gerger gerrie geruge geufer gibber gibier gigger gigiri greefe greffe greger gregge gregre greife greiff greige griebe griefe grieff griege griffe grigri grubbe gruber gruffe grugru gubber gubeer gubgub gueber guebre guegue guerie guerre guerri guffer guigue gurbir gurbru gurrie gurugu i-bere i-bure i-free iffier igbere igf-ii irugur rebuff reefer reeffe refeff refire refrei refuge refurb reggie regueb regufe reiber reueir reuere reuire reurge ribber ribbie ribibe ribier rieber rieger riffer rififi rigeur rigger riuere rubbee rubber rubbie rubier rubrie ruffer ruffie rugger rui-be uruffe