-tree bbbee be-er beber beebe beeby beery beete beety beeut berbe beret berey berre berru berry berte berty beryu betee beter betre bett- bette betty betyb beuer beure beury beute beyer beyre beyte brebu breer breet brere brery brett breu- breyr brrrr bruer bruet brute bruty bryt- btr-t bubbe bubby buber bubry buret burey burru burry burte burtt burut burye buryt buter butte butty butut butyr buyer by-by bybee byrre byrte bytr- ebber ebbet ebert ebure eeeee erbbe erber ereby erere errey errtu erte erter eruby etete etree etter eturu euery eurre eury- eyere eyrer rebbe reber rebet rebut rebuy reere rere- reree reret retee reter retry rette reuer reuet reute reyte rubby rubee ruber rubey ruere ruete rurey ruter rutey rutte rutty ruutu rybee rytte ryuet ryyty tbtbt tbutt tbyte teber tebet tebey teety terby teret tereu terre terry tert- teter tetr- tette tetty teyre treer treet treey trere trete trett trety treut treye trubu truby truer trute truyt trybe tryer tryte ttttt tubby tuber tueye turbe turbt turet turre turtu turut tutee tutte tutty tuuru tuyer tuyre tybee tyere tyree tyrer tyret tytte tyube uber- uerry urter urubu urutu uryu uryuu uter- utery utter uttur utube uturu uuuuu ybete ye-ye yebyu yeere yerby yeter yette yeyre ytter yubbe yuert yuery yurre yurty yuyue yyete