bbbee be-er beber bebic becic beebe beeri beibi beice beier beire berbe berec berei berie berre berri bibbe biber bibic bibie bibri bicer biebe biere bieri birie brece breer brere bribe brice briec brier brrrr ccccc cccii cciii cebec ceber ceci- cecie cecri ceere cerc- cerce cerci cerec cerer ceric cerie cerre ciber cibir cicer circe ciric cirie cirr- cirri crebe crece creer cribb cribe crice crier ebber ebbie ebibe eeeee eerie eirie erbbe erber erere ericb erice erier eriic icbrr iceci icici icier iecee ieiri ierei iiiee iiiii ircii irece rcirc rebbe rebec reber recce reece reere reice rere- reree reric rerir ribbi ribce riber ribie ricci ricer ririe