bbbee be-er bebel beber beebe beele beffe befur belee belef belem bellb belle belue belum belur bembe bemer berbe berel berle berme berre berru berum beuer beule beure bleer blere bleue bluer bluff blufr blume blurb blure blurr brebu breef breel breem breer brell breme bremm brere breu- brmmm brrrr bruer bruff brule brull brume brumm bubbe buber buble buell buffe bufle bulb- bull- bulle bulul bumbu bumme burel burle burru ebber ebble ebell eberl eblul ebull ebure eeeee eeler efere effer efrem efuru elele eleme ellel eller ellul elmer elulu eluru embee embel ember emble embue emeer emele emell emere emerl emmer emule emure erbbe erber erem- erere euell euler eum-u eumel eurel eurre febel feble febre feele feeme feere felle femle femme femur ferel ferle ferme ferr- ferre feuer feule fleem fleer fleme flere fleum fleur fluff flume flumm flurb flure flurr fmllr fmmul freel freer freme fremm frere freur frume fu-fu fulbe fulle fullf fumee fumel fumer furel furme lebel leber leell leeme leere lefeu leffe leful leleu lelle lemel lemer lemme lemur lerer lerum lmule lubbe luber luble lubur lufre lulle lulul lumb- lumbe lumer lumle lumme lurer lurue mbebe mbere mbube mbule mbulu mburu mebbe meble meefe meele meell meemu meere melbu melee melem mell- melle melub melur membe memel memer merel merer merle merre merul merur meuer meule meure mmfbm mmmmm mreru mrlee muble muffe mufle muler mulle mulur mumbe mumle mumlu mumme mummu mureu murle murre murru murum rebbe rebel reber reefe reeme reere refel refer reffe refme relee relue remee remel remer remue remuf rere- reree rerum reuel reuer reule reume rubee rubel ruber ruble ruele ruell ruere ruffe ruler rumbe rumer rummu ruule ubble uber- ubume uelfe ufere ullur ulmer ulrum ululu uluru umbe- umbel umber umble umblu umbre umeer umeme urelu ureme urubu uuuuu