b-r-k bbbee be-er bebek beber beebe beeke beene beffe befur behen beher behue behuf beken beker bekke bene- benfe benke benne bennu benue benuk benun benur berbe bereh berek beren berhe berk- berke berne berre berru berun beuer beure bheen bheer brebu breef breek breen breer breke brene brenk brenn brere breu- brrrr bruen bruer bruff bruhn bruke brune brunk brunn bruun bubbe buben buber buffe buhen buhne buker bukk- buknu buneh bunke bunne bunuk bunun bureh burek buren burke burn- burne burru buruk burun ebber ebene ebern ebneh ebner ebure eeeee eener efere effer efren efuru eheke ehnen ehren ekene ekker ekren ekuku ekuru en-hk enbun enfeh enfer enfeu enker enku enuff enure enurn erbbe erben erber ereen erere ernen eruke eurre febre feere feher fenek fener feneu fenne feren ferr- ferre feuer freeh freek freer freke frenk frere freur fu-fu funen funke furen h-e-b hburn he-he hebbe hebe- heben heber heene heere heern hefen hefer heffe heker hekk- hekne henek henen henke henne hennu herek heren herke herne herre heruk herur heuer heure hhhhh hnkhf hrbek hrere hubbe huber hubur huere hufen huffe huhuh huker hunne hurbe hureh hurre huuru kebbe kebek keben keber keefe keene keere kefee kehek kenku kenne kerek keren kerne kernu kerre kheer khene kherf khuen khufu khuru khuur kneeh kneen knuff knurr kreef kreek kreke krenn kreuk krunk kruun kubek kuben kuber kuheh kukur kuneh kunek kunen kuner kunku kunne kunur kurbu kureh kurek kuren kurku kurne kurre kuruk nebek neber neere nefen nefer neffe nefre neheb neher nehru neker neneh neree nerre nerur neuen neuer neueu neune neur- neure nfrkb nkubu nnebe nu-nu nuhuh nukeh nuker nunun nure- nureh nurek nuruk nurun rebbe reber rebun reefe reene reere reerh refen refer reffe refne reher rehue reken rekke rekne rekun renee rener renfe renke renku renne rere- reree rerun reuen reuer reune rheen rhene rubee ruben ruber rubke ruere rueun ruffe ruhen ruhnu ruhub ruken rukke runer runne ubeen uber- ueken ufere uh-ee uh-uh uhhuh uhuru ukeke unfun unfur unhue unken unker unkur unnun unnur unref unruh unrun unurn urker urkun urubu uuuuu