bbbee be-er beber beebe bembe bemer berbe berme berre berru berum beuer beure brebu breem breer breme bremm brere breu- brmmm brrrr bruer brume brumm bubbe buber bumbu bumme burru ebber ebure eeeee embee ember embue emeer emere emmer emure erbbe erber erem- erere eum-u eurre mbebe mbere mbube mburu mebbe meemu meere membe memer merer merre merur meuer meure mmmmm mreru mumbe mumme mummu mureu murre murru murum rebbe reber reeme reere remee remer remue rere- reree rerum reuer reume rubee ruber ruere rumbe rumer rummu uber- ubume umbe- umbre umeer umeme ureme urubu uuuuu