bbbee bcell be-er bebel beber becel becue becum beebe beele belce belec belee belem bellb belle belue belum belur bembe bemer berbe bercu berec berel berle berme berre berru berum beuer beule beure bleer blere bleue bluer blume blurb blure blurr brebu brece breel breem breer brell breme bremm brere breu- brmmm brrrr bruce bruer brule brull brume brumm bubbe buber buble bucum bucur buell bulb- bull- bulle bulul bumbu bumme burcu burel burle burru buruc cblue ccccc ccell cclcm ccrcl ccrel cebec ceber cecum ceele ceere celeb celer cell- celle cemec cemre cerbu cerc- cerce cerec cerer cerre cleer cleme clerc clere clubb clue- cluer clumb clurr cmere crebe crece creel creem creer crele crell creme creu- creue creul crrel cruce cruel crule crull crumb crume crure cubbe cubeb cubel cuber cubub culbe culle cullu culur cumbe cumbu cumec cumel cumm- curce curel curer curle curll curlu curre cuuel ebber ebble ebell eberl eblul ebull ebure eccle ecume eeeee eeler eembc elele eleme ellel eller ellul elmer elrec elulu eluru embee embel ember emble embue emcee emeer emele emell emere emerl emmer emule emure erbbe erber erem- erere eucre euell euler eum-u eumel eurel eurre lebce lebec lebel leber lecce leece leell leeme leere leleu lelle lemel lemer lemme lemur lerer lerum leuc- leuce lmule lubbe luber luble lubur lucee lucre lucur lulec lulle luluc lulul lumb- lumbe lumer lumle lumme lurer lurue mbebe mbere mbube mbule mbulu mburu mcbee mccue mcree mcube mebbe meble mecel mecul mecum meece meele meell meemu meere melbu melee melem mell- melle melub melur membe memel memer merce merel merer merle merre merul merur meuer meule meure mmccc mmccl mmmcc mmmmm mrcub mreru mrlee muble mucel mucum mucur mulce muler mulle mulur mumbe mumcu mumle mumlu mumme mummu mureu murle murre murru murum rebbe rebec rebel reber recce recue recur reece reeme reere relee relue remee remel remer remue rere- reree rerum reuel reuer reule reume rubee rubel ruber ruble rucer rucul ruele ruell ruere ruler rumbe rumer rummu rurec ruule u-cee ubble uber- ubume uccel uccle ucell uclue ulcer ullur ulmer ulrum ululu uluru umbe- umbel umber umble umblu umbre umeer umeme urcel urelu ureme urubu uruce urucu uuuuu