bbbee be-er bebel beber beebe beele beffe befur begee begge begle begue begur belee belef beleg belge bellb belle belue belur berbe bereg berel berge berle berre berru beuer beule beure bleer blere bleue bluer bluff blufr blurb blure blurr brebu breef breel breer breg- brege bregg brell brere breu- brrrr bruer bruff bruge brugg brule brull bubbe buber buble buell buffe bufle buger bugge bugle bugre bulb- bulge bull- bulle bulul burel burge burgu burle burru ebber ebble ebell eberg eberl eblul ebull ebure eeeee eeler efere effer efuru egger elegu elele elge elgee elger ellel eller ellul elulu eluru erbbe erber erege erere euell euler eurel eurre febel feble febre feele feere fegue felle ferel ferle ferr- ferre feuer feuge feule fleer flegg flere fleur fluff flurb flure flurr freel freer frege frere freur fu-fu fugee fuger fugle fugue fugug fulbe fulle fullf furel gberg gberu gebel geber gebre gebur geere gegge gelee geler gelle gelru gelug gerbe gerle gerre geruf ggulu glebe gleer gleff glegg glele glere glubb gluer glufe gluff grebe greef greer grefe greff grege gregg grell grgur grrrl grrrr grubb grube gruel grufe gruff grure gubbe guber gubru guelf guell guere gugel gugul guler gulle gurge gurle gurre gurur lebel leber leell leere lefeu leffe leful leger legge leleu lelle lerer lerge leuge llerg lubbe luber luble lubur lufre luger lugge lugre lulle lulul lurer lurgg lurue rebbe rebeg rebel reber reefe reege reere refel refer reffe regel reger regge regle regul regur relee relue rere- reree reuel reuer reule rubee rubel ruber ruble ruegg ruele ruell ruere ruffe ruger rugge ruler ruule ubble uber- uelfe ufere uggle ugrug ulger ullur ululu uluru urelu urgel urger urubu uuuuu