bbbee be-er beber bebic becic beciu becue beebe beeri beffe befie befur beibi beice beier beife beire berbe bercu berec berei berie beriu berre berri berru beuer beure bibbe biber bibic bibie bibri bicer biebe biefe biere bieri bifer biffi birie birur biure brebu brece breef breer brere breu- bribe brice briec brief brier brifu brrrr bruce bruer bruff bruiu bruri bubbe buber bucci bucic bucie bucur buffe buffi buici buire burcu burfi buric burie burri burru buruc cbeff ccccc cccii ccifc cciii cebec ceber ceci- cecie cecri ceere cefcu cerbu cerc- cerce cerci cerec cerer ceric cerie cerre cfu-e ciber cibir cicer ciceu cifer circe ciric cirie cirr- cirri crebe crece creer creu- creue cribb cribe crice crier cruce crufe cruif crure cubbe cubeb cuber cubi- cubic cubie cubub cucei cucui cufeu cuffe cufic cufre cuire curbi curce curer curic curie curre curri ebber ebbie ebibe ebure eeeee eerie efere eferi effer effie efrei efuru eirie erbbe erber erere ericb erice erier eriff eriic eubie eucre eufic euric eurre fbcci febre feere feier ferce feric ferie ferr- ferre ferri feuer fiber fibr- fibre fieee fieri fifer fifie firee firei firer firie firre freei freer freir frere freur frice frier fu-fu fuci- furci furie furir ibbur icbrr iceci icici icier icube iecee ieiri ierei if-- ifere iiiee iiiii ircii irece iurie rcirc rebbe rebec reber recce recue recur reece reefe reere refer reffe reice reiff rere- reree reric rerir reuer reuir ri-fi ribbi ribce riber ribie ricci ricer riceu riefe rifer riife ririe riuer rubbi rubee ruber rubie rucci rucer ruere ruffe rufi- rufie ruiru rurec ruric u-cee uber- ubirr ufere uffie urbic ureic uribe uric- urric urubu uruce urucu ururi uuuuu