-tree bbbee bbser be-er beber bebes beebe beebs beers beest beete beets begee beget begge beggs berbe bereg beres beret berge bergs berre berse berte berts besee beset besse beste bests betee beter betes betre betrs bett- bette betts breer brees breet breg- brege bregg brere brers brese bress brest brets brett brrrr btr-t ebber ebbet eberg ebers ebert eeeee egers egest egger egres egret erbbe erber erebs erege erere erest erets erres erses erste ersts erte erter ertes esere esser esses essse estee ester estes estet estre etest etete etree etres etter ettes gberg geber gebet gebre geere geers geert geese geest geete gegge gerbe gerbs geres gerre gers- gerse gerss gerts gertt geser gesse geste gests getee geter gette getts grebe greer grees greet grege gregg gregs grese gress grest grete grett grrrr gsses gtsss rebbe rebeg reber rebet rebts reege reere reese reest reger reges reget regge regts regtt rere- reree reres reret resee reses reset resse reste restr rests retee reter retes retrg rette retts sebbe sebes sebet seebe seege seere seers seese seest seete segeg seger seget segge segre segrt segtb serbs serer seres seret serge sergs sergt serre serse serss sert- serte serts seser seses sesse seste setee seter setse sette setts ss-gb ssgts sssrb sssss steeg steer stees steet steg- stege stegs stere sterr sters stert stete stets stger stges strbe streb stree stret strrs tbtbt teber tebet teebs teege teers teese teest teets teges tegre teres teret terge terre terrs terse tert- tesse teste tests teter tetes tetr- tette treer trees treet treg- trere tres- trese tress trest trete trets trett tsebe tsere tsets tsgts ttest ttttt