b-r-k bbbee bcell be-er bebek bebel beber becel becke becue beebe beeke beele beker bekke belce belec belee belek bellb belle belue belur berbe berck bercu berec berek berel berk- berke berle berre berru beuer beule beure bleck bleek bleer bleke blekk blere bleue bluer bluke blurb blure blurr brebu brece breck breek breel breer breke brell brere breu- brrrr bruce bruck bruer bruke brule brull bubbe buber buble bucek bucku bucur buell buker bukk- bulb- bulck bulke bull- bulle bulul burck burcu burek burel burke burle burru buruc buruk cblue ccccc ccell ccrcl ccrel cebec ceber ceele ceere celeb celer cell- celle cerbu cerc- cerce cerec cerer cerke cerre cleck cleek cleer cleke clerc clere clerk cleuk clubb cluck clue- cluer cluke clurr crebe crece creek creel creer creke crele crell creu- creue creul crrel cruce cruck cruel cruke crule crull crure cubbe cubeb cubel cuber cubub cucuk cuker culbe culle cullu culur curce curel curer curle curll curlu curre cuuel ebber ebble ebell eberl eblul ebull ebure eccle eckel ecker eckle eecke eeeee eeler ekker ekuku ekuru elele ellek ellel eller ellul elrec elulu eluru erbbe erber erere erkec erkel eruke eucre euell euler eurel eurre kcell kebbe kebek keber keble kecel kecer keele keere kekec kelce kelek kelle kerek kerel kerle kerre klece klerk kluke kreek kreel kreke krele krell kreuk krull kubek kuber kubul kucer kucuk kukec kukel kukle kukur kullu kulul kulur kurbu kurek kurku kurlu kurre kuruc kuruk lebce lebec lebel leber lecce leece leeke leell leere lekel lekeu leleu lelle lerer leuc- leuce leuk- leuke lubbe luber lubke luble lubur lucee lucke lucre lucur luker lukre lulec lulle luluc lulul lurck lurer lurue rebbe rebec rebel reber recce recke recue recur reece reere rekel rekke rekle relee relek relue rere- reree reuel reuer reule rubee rubel ruber rubke ruble rucer rucul ruele ruell ruere rukel rukke ruler rurec ruule u-cee ubble uber- uccel uccle uceku ucell uclue ukeke ulcer ulker ullur ululu uluru urcel urelu urkel urker urubu uruce urucu uuuuu