bbbee be-er bebel beber beebe beele begee begge begle begue begur belee beleg belge bellb belle belue belur berbe bereg berel berge berle berre berru beuer beule beure bleer blere bleue bluer blurb blure blurr brebu breel breer breg- brege bregg brell brere breu- brrrr bruer bruge brugg brule brull bubbe buber buble buell buger bugge bugle bugre bulb- bulge bull- bulle bulul burel burge burgu burle burru ebber ebble ebell eberg eberl eblul ebull ebure eeeee eeler egger elegu elele elge elgee elger ellel eller ellul elulu eluru erbbe erber erege erere euell euler eurel eurre gberg gberu gebel geber gebre gebur geere gegge gelee geler gelle gelru gelug gerbe gerle gerre ggulu glebe gleer glegg glele glere glubb gluer grebe greer grege gregg grell grgur grrrl grrrr grubb grube gruel grure gubbe guber gubru guell guere gugel gugul guler gulle gurge gurle gurre gurur lebel leber leell leere leger legge leleu lelle lerer lerge leuge llerg lubbe luber luble lubur luger lugge lugre lulle lulul lurer lurgg lurue rebbe rebeg rebel reber reege reere regel reger regge regle regul regur relee relue rere- reree reuel reuer reule rubee rubel ruber ruble ruegg ruele ruell ruere ruger rugge ruler ruule ubble uber- uggle ugrug ulger ullur ululu uluru urelu urgel urger urubu uuuuu