bbbee be-er beber beebe begee begge begue begur berbe bereg berge berre berru beuer beure brebu breer breg- brege bregg brere breu- brrrr bruer bruge brugg bubbe buber buger bugge bugre burge burgu burru ebber eberg ebure eeeee egger erbbe erber erege erere eurre gberg gberu geber gebre gebur geere gegge gerbe gerre grebe greer grege gregg grgur grrrr grubb grube grure gubbe guber gubru guere gurge gurre gurur rebbe rebeg reber reege reere reger regge regur rere- reree reuer rubee ruber ruegg ruere ruger rugge uber- ugrug urger urubu uuuuu