bbbee be-er beber beebe beffe befur begee begge begue begur berbe bereg berge berre berru beuer beure brebu breef breer breg- brege bregg brere breu- brrrr bruer bruff bruge brugg bubbe buber buffe buger bugge bugre burge burgu burru ebber eberg ebure eeeee efere effer efuru egger erbbe erber erege erere eurre febre feere fegue ferr- ferre feuer feuge freer frege frere freur fu-fu fugee fuger fugue fugug gberg gberu geber gebre gebur geere gegge gerbe gerre geruf grebe greef greer grefe greff grege gregg grgur grrrr grubb grube grufe gruff grure gubbe guber gubru guere gurge gurre gurur rebbe rebeg reber reefe reege reere refer reffe reger regge regur rere- reree reuer rubee ruber ruegg ruere ruffe ruger rugge uber- ufere ugrug urger urubu uuuuu