-er bbb bbe bbq bbr bbt be- beb bee beq ber bet bqe bqt brb bre brq brr brt btb bte btq btr btt ebb ebe ebq ebr ebt eeb eee eer eet eqe eqq eqt erb ere erq err ert etb ete etr ett qbe qbq qee qet qqq qrb qre qrt qtq qtr rbb rbe rbr rbt re- reb ree req rer ret rrb rrq rrr rrt rtb rte rtq rtr rtt tbb tbe tbr tbt te- teb tee teq ter tet trb tre trq trr trt ttb tte ttr ttt

bbbb bbbq bbeb bbet bebb bebe beeb beer beet bere berr bert bete bett breb bree brer bret brrr btrt bttb ebbr eber eeee eete erbb erbe ereb erer eret erre etbr etee eter etre ette q-be qere qerq qqqq rbbb rbbr rebb rebe reeb reet rere rert rete retr rett rrrr rtee tbrb teer teet ter- tere terr tete tetr tett tre- tree tret trte trtr ttbb tter tttt

-tree bbbee bbqer be-er beber beebe beete berbe beret berre berte betee beter betre bett- bette breer breet brere brett brrrr btr-t ebber ebbet ebert eeeee erbbe erber erere erte erter etete etree etter q-tee rebbe reber rebet reere rere- reree reret retee reter rette tbtbt teber tebet teret terre tert- teter tetr- tette treer treet trere trete trett ttttt

b-tree bbbbbb beebee beeter berbee berber bereet berere berrer berret bertre betere betete bettee better breere brette ebbert eebree erbree errett qerret r-tree reteer reteet retere retree retret retter t-tree teebee teetee teeter terete terrer terret terter tertre tetete tetter treete tretee trette

bbbbbbb beetree berbere berrett bertree reteere reterre retrete rettert terere terreer terrere tettete treetee trettre

bbbbbbbb bebetter berebere betterer etbetter

beebeebee tebe-tebe

betterbeer

bbbbbbbbbbbbbbb