-tree bbbee be-er beber beebe beete beeth begee beget begge beher behet berbe bereg bereh beret berge bergh berhe berre berte berth betee beter bethe betre bett- bette bheer breer breet breg- brege bregg brere breth brett brrrr btr-t ebber ebbet eberg ebert eeeee egger egret ehret erbbe erber erege erere erte erter erthe etete ether etree etter gberg geber gebet gebre gee-h geere geert geete gegge gehee gerbe gerre gerth gertt getee geter gethe gette gheet grebe greer greet grege gregg grete greth grett grrrr h-e-b he-he hebbe hebe- heber heegh heere heete heger hegge heght hehte hereg herre herte herth heter hethe hette hgttg hheth hhhhh hrere hthrt htree rebbe rebeg reber rebet reege reere reerh reeth reger reget regge regtt reher rehet rere- reree reret retee reter rethe retrg rette rhett tbtbt teber tebet teege teeth teght tegre tehee teret terge terre tert- teter tethe tetr- tette thebe theeb theer thegh thegr ther- there thete theth thre- three thret treer treet treg- trere trete trett ttttt