bbbee be-er beber beebe beeri beffe befie beibi beier beife beire berbe berei berie berre berri bibbe biber bibie bibri biebe biefe biere bieri bifer biffi birie breef breer brere bribe brief brier brrrr ebber ebbie ebibe eeeee eerie efere eferi effer effie efrei eirie erbbe erber erere erier eriff febre feere feier ferie ferr- ferre ferri fiber fibr- fibre fieee fieri fifer fifie firee firei firer firie firre freei freer freir frere frier ieiri ierei if-- ifere iiiee iiiii rebbe reber reefe reere refer reffe reiff rere- reree rerir ri-fi ribbi riber ribie riefe rifer riife ririe