bbbee be-er beber beebe beene bene- benne bennu benue benun benur berbe beren berne berre berru berun beuer beure bre-x brebu breen breer brene brenn brere breu- breux brrrr bruen bruer brune brunn bruun bubbe buben buber bunne bunun buren burn- burne burru burun ebber ebene ebern ebner ebure eeeee eener enbun enure enurn erbbe erben erber ereen erere ernen eurex eurre exene exner exurb neber neere neree nerre nerur neuen neuer neueu neune neur- neure nexen nnebe nu-nu nunun nure- nurun rebbe reber rebun reene reere renee rener renne rere- reree rerun reuen reuer reune rexen rexer rubee ruben ruber ruere rueun runer runne ubeen uber- uberx unnun unnur unrun unurn urbex urubu uuuuu xbxrx xexeu xexex