bbbee bcell be-er bebel beber becel becue beebe beele belce belec belee bellb belle belue belur berbe bercu berec berel berle berre berru beuer beule beure bleer blere bleue bluer blurb blure blurr brebu brece breel breer brell brere breu- brrrr bruce bruer brule brull bubbe buber buble bucur buell bulb- bull- bulle bulul burcu burel burle burru buruc cblue ccccc ccell ccrcl ccrel cebec ceber ceele ceere celeb celer cell- celle cerbu cerc- cerce cerec cerer cerre cleer clerc clere clubb clue- cluer clurr crebe crece creel creer crele crell creu- creue creul crrel cruce cruel crule crull crure cubbe cubeb cubel cuber cubub culbe culle cullu culur curce curel curer curle curll curlu curre cuuel ebber ebble ebell eberl eblul ebull ebure eccle eeeee eeler elele ellel eller ellul elrec elulu eluru erbbe erber erere eucre euell euler eurel eurre lebce lebec lebel leber lecce leece leell leere leleu lelle lerer leuc- leuce lubbe luber luble lubur lucee lucre lucur lulec lulle luluc lulul lurer lurue rebbe rebec rebel reber recce recue recur reece reere relee relue rere- reree reuel reuer reule rubee rubel ruber ruble rucer rucul ruele ruell ruere ruler rurec ruule u-cee ubble uber- uccel uccle ucell uclue ulcer ullur ululu uluru urcel urelu urubu uruce urucu uuuuu