-er bbb bbe bbi bbo bbr bbt bbw be- beb bee bei beo ber bet bew bi- bib bie bii bio bir bit biw bob boe boi boo bor bot bow brb bre bri bro brr brt brw btb bte bti bto btr btt btw bwb bwi bwo bwr ebb ebe ebi ebo ebr ebt ebw eeb eee eeo eer eet eew eib eie eii eio eir eit eo- eob eoe eoi eoo eor eot eow erb ere eri ero err ert erw etb ete eti eto etr ett etw ewb ewe ewi ewo ewr ewt eww ibb ibe ibi ibo ibr ibt ibw ie- iee iei ier iet iib iie iii iio iir iit iiw io- iob ioe ioi ioo ior iot iow ir- irb ire iri iro irr irt itb ite iti ito itt iwb iwe iwi iwo iwr iwt iww o-i ob- obb obe obi obo obr obt obw oeb oee oei oeo oer oet oib oie oii oio oir oit oo- oob ooi ooo oor oot oow or- orb ore ori oro orr ort ot- otb ote oti oto otr ott otw owb owe owi owo owt oww rbb rbe rbi rbo rbr rbt rbw re- reb ree rei reo rer ret rew rib rie rii rio rir rit rob roe roi roo ror rot row rrb rri rrr rrt rtb rte rti rto rtr rtt rtw rwb rwe rwi rwr tbb tbe tbi tbo tbr tbt te- teb tee tei teo ter tet tew tib tie tii tio tir tit tiw to- tob toe toi too tor tot tow trb tre tri tro trr trt trw ttb tte tti tto ttr ttt ttw twb twe twi two twr twt tww wbb wbe wbi wbo wbr wbt wbw web wee wei weo wer wet wew wib wie wii wir wit wob woe woi woo wor wot wow wr- wre wri wro wrr wrt wrw wtb wti wto wtr wtt wtw wwe wwi wwo wwt www

bbbb bbeb bbet bbwr bebb bebe bebi bebo beeb beer beet beir beit beo- beor beot bere beri bero berr bert bete beti beto bett betw bewe bibb bibe bibi bibo bieb bier biet bio- bioi biot birb bire biri biro birr birt bite bito bitt biw- bobb bobe bobi bobo bobw boee boeo boer boet boi- boie boii boit boob booe boor boot boow bor- bore bori boro borr bort borw botb bote boti boto bott botw bowe bowi bowr bowt breb bree brei breo brer bret brew brie brio brit brob broe broo bror brot brow brrr brwe btie btob btor btrt bttb btwo ebbo ebbr ebbw eber ebit eboe eboo ebor ebow ebro eeee eero eete eiei eier eire eitb eiti eito eitr eoir eore eori eoto eotw erbb erbe ereb erei erer eret erew erie erio erit erob eroe eroi eroo erre erro erwt etbr etee eter etio etoe etre etro ette etti etto ewer ewew ewre ewte i-be ibet ibew ibie ibot ibri ibro ibtb ieet ieie ieio iere ieri iett iiie iiii iiio iiit iioi iioo iitr iitt iiwi iobi ioee ioii ioio ioit iooi iooo iore iori iote ioto iowe irbe iree irer iri- irie irio irob irre irri irte irti itbe iter itet itie itoi itoo itor itri itto itwe iweb iwie iwiw o-eo obbo ober obet obie obit oboe oboi obor obot obre obri obro oere oeti oier oiii oire oirt oiti oobe oobi ooer oooo oore oort ootb ootw orbb orbe orbi orbo ore- oreb oreo orer ori- orie orio orit oro- oroe oror orot orri orro orte orto orwe orwo otee oter otit oto- otoe otoo otor otow otre otro otte otti otto otwo ower owie owir owoe owow owre owt- owte owtt rbbb rbbr rebb rebe rebo reeb reet reii reir reit reot rere reri rero rert rete reti reto retr rett rewe rib- ribe ribo rier riet riew riot rire riri rite riti rito ritt riwo rob- robb robe robi robo robt roer roet roio roir roit roob rooi roor root rore rori roro rort rote roti roto rotr rott rowb rowe rowi rowr rowt roww rrrr rtee rtei tbit tbrb tebo teer teet teie teir teor teow ter- tere teri tero terr tete teti teto tetr tett tewo tibi tie- tiee tiei tieo tier tiet tiew tiit tirb tire tiri tiro tirr tite titi tito titt tiwi tobe tobi tobo tobt toee toei toer toet toie toit toor toot tore tori toro torr tort tote toti toto totr tott towe tre- tree trei treo tret trew tri- trib trie trio trit troe troi troo trot trow trte trtr trwe ttbb tteo tter ttoe tttt twbt twee twei twer twi- twib twie twit two- twob twoo twot wbbb wbbe wbbi wbbo wbbr wbbt wbbw wbeb wbei wber wbet wbew wbib wbie wbio wbiw wbob wboi wbor wbow wbrb wbri wbrr wbrt wbrw wbte wbti wbto wbtr wbtt wbtw wbwb wbwi wbwo wbwt webb webe webo webt weeb weei weeo weer weet weib weie weii weio weir weit weow wer- werb were weri wero werr wert werw wetb wete weto wetr wett wewe wewo wibb wibi wibr wibt wibw wier wiii wiit wiob wioe wioi wioo wiot wirb wire wiri wiro wirr wirt wite witi witr witt wiwi wobb wobe wobo wobt woer woio woir woob woot woow worb wore wori woro worr wort worw wotb wote wotr wott wotw wowb wowe wowi wowo wowt woww wrbb wrbe wrbi wrbo wrbt wrbw wreb wree wrei wrer wret wrew wrie writ wrob wroi wroo wrot wrow wrrb wrre wrro wrrw wrtb wrte wrti wrto wrtr wrtw wrwb wrwr wtbb wtbi wtbo wtbr wtib wtie wtob wtoe wtor wtot wtow wtrb wtre wtri wtro wtrt wtrw wttb wtte wtti wtto wttr wttt wttw wtwb wtwo wtwr wtwt wtww wwbb wwbr wwbt wweb wwei wweo wwer wwet wwib wwii wwio wwor wwot wwow wwrb wwre wwrr wwrw wwti wwtr wwtw wwwe wwwi wwwr wwww

-tree bbbee be-er be-ro beber bebot bebti beebe