bbbee be-er beber beebe beeve begee begge begue begur berbe bereg berge berre berru beuer beure beuve bever bevue brebu breer breg- brege bregg brere breu- breve brrrr bruer bruge brugg bubbe buber buger bugge bugre burge burgu burru ebber eberg ebure eeeee eevee eever egger erbbe erber erege erere ereve eurre evere everg everr eveve gberg gberu geber gebre gebur geere gegge gerbe gerre gerve gever grebe greer grege gregg greve grgur grrrr grubb grube grure gruve gubbe guber gubru guere gurge gurre gurur rebbe rebeg reber reege reere reeve reger regev regge regur rere- reree reuer rever revue rubee ruber ruegg ruere ruger rugge uber- ugrug urger urubu uuuuu veber vebre veere veeve vegre vereb verge verre verve veuve vever vuere vuver