b-r-k bbbee be-er bebek beber beebe beeke beeri beffe befie beibi beier beife beire beker bekir bekke berbe berei berek berie berk- berke berre berri bibbe biber bibie bibri biebe biefe bieke biere bieri bifer biffi biker bikie birie breef breek breer breik breke brere bribe brief brier brike brrrr ebber ebbie ebibe ebike eeeee eerie eerik efere eferi effer effie efrei eiker eirie ekbir ekker erbbe erber erere erier eriff erkki febre feere feier ferie ferik ferr- ferre ferri fiber fibr- fibre fieee fieri fierk fifer fifie fikie fikri firee firei firer firie firre freei freek freer freik freir freke frere frier frike ibrik ieiri ierei if-- ifere iiiee iiiii ikbke ikire iriki irker kebbe kebek keber kebir keefe keere keeri kefee keffi kefir keiki keire keiri kekri kerei kerek kerie kerik kerre kerri kfeir kibbe kibbi kibei kibi- kieke kifri kiiki kikki kirfi kirie kirke kirki kirre kreef kreek kreke kreki kribi kriek krier krike rebbe reber reefe reere refer reffe reiek reiff reike reiki rekke rere- reree rerik rerir ri-fi ribbi riber ribie riefe rifer riife rikei riker rikki ririe