bbbee be-er bebel beber beebe beele beeli beeri beibi beier beire belee belie beliu bellb belle belli belue belur berbe berei berel berie beril beriu berle berli berre berri berru beuer beuil beule beure bibbe bibel biber bibie bible bibri biebe biele biere bieri bilbe bilbi bilel bili- bille billi billu birel birie birle birur biure bleer bleib blere bleue blier bliue bluer bluie blurb blure blurr brebu breel breer breil brell brere breu- bribe briel brier brill brrrr bruer bruiu brule brull bruri bubbe buber buble bueil buell buile buire bulb- bulbi buliu bull- bulle bulli bulul burel burie burle burli burri burru ebber ebbie ebble ebell eberl ebibe ebill eblul ebull ebure eeeee eeler eerie eiler eirie elbie elele eleri eliel ellel eller ellie ellul elulu eluru erbbe erber erbil erere erier eubie euell euler eurel eurre ibbur ibele ibill ieiri ierei iiiee iiiii ileri illbe iller illui ilulu irele iriel irill irrel irule iuliu iurie lebel leber leeli leell leere leibi leile leill leire lelei leleu lelle lelli lerer lerie libbe libel liber libre libri libru liebe lieli liere lilie liliu lille lilli liril lirui liule liuli liure lubbe lubei luber lubie luble lubur luire lulle lulli lulul lurer lurie lurue luuri rebbe rebel reber reere reile reill relee relie relli relue rere- reree rerir reuel reuer reuil reuir reule reuli ribbi ribel riber ribie rieul riler rille ririe riuel riuer rubbi rubee rubel ruber rubie ruble ruele ruell ruere ruili ruiru ruler rulli ruule ubble uber- ubirr ullur ululu uluru urelu uribe uriel urubu uruli ururi uuuuu