-er bbb bbe bbo bbr bbs bbt bbx be- beb bee beo ber bes bet bex bob boe boo bor bos bot box brb bre bro brr brs brt brx bsb bse bso bsr bss bst bsx btb bte bto btr bts btt btx bxb bxo bxx ebb ebe ebo ebr ebs ebt ebx eeb eee eeo eer ees eet eex eo- eob eoe eoo eor eos eot erb ere ero err ers ert es- esb ese eso esr ess est esx etb ete eto etr ets ett etx ex- exe exo exr exs ext exx ob- obb obe obo obr obs obt obx oeb oee oeo oer oes oet oex oo- oob ooo oor oos oot oox or- orb ore oro orr ors ort orx os- osb ose oso osr oss ost osx ot- otb ote oto otr ots ott ox- oxb oxo oxt oxx rbb rbe rbo rbr rbs rbt rbx re- reb ree reo rer res ret rex rob roe roo ror ros rot rox rrb rrr rrs rrt rsb rse rso rsr rss rst rsx rtb rte rto rtr rts rtt rtx rxr rxs sbb sbe sbo sbr sbs sbt sbx se- seb see seo ser ses set sex sob soe soo sor sos sot sox sr- srb sre sro srr srs srt srx ss- ssb sse sso ssr sss sst ssx stb ste sto str sts stt stx sxs sxt t-x tbb tbe tbo tbr tbs tbt te- teb tee teo ter tes tet tex to- tob toe too tor tos tot tox trb tre tro trr trs trt trx tsb tse tso tsr tss tst tsx ttb tte tto ttr tts ttt ttx txe txs txt xbe xbr xbx xee xer xes xet xex xoo xor xos xot xox xrt xrx xsb xss xst xtr xts xtx xxo xxx

-ose bbbb bbbs bbeb bbet bbox bebb bebe bebo beeb beer bees beet beo- beor beos beot bere bero berr bers bert bes- bese beso bess best bete beto bets bett bobb bobe bobo bobs boee boeo boer boes boet boob booe boor boos boot boox bor- bore boro borr bors bort bose boso boss bost botb bote boto bots bott breb bree breo brer bres bret brex brob broe broo bror bros brot brox brrr brrs brsb brsr brst bseb bsee bser bses bset bsos bsse bsts btex btob btor btrt btss bttb ebbo ebbr ebbs eber ebes eboe eboo ebor ebos ebox ebro eeee eees eero eers eese eete eets eext eoes eore eost eoto eots er-x erbb erbe ereb erer eres eret erob eroe eroo eros erre erro errs erse erso erst erts esbo esbs esee eseo eser eses eset eso- esos esox esse esso esst este esto estr ests etbr etee eter etes etoe etos etox etre etro ette etto exer exes exo- exor exos exrx exte extr exts o-eo obbo ober obes obet obex oboe obor obos obot obox obre obro obsr obss obst obts oere oers oese oest oobe ooer ooes oooo ooos oore oort oose oost ootb oots orbb orbe orbo orbs ore- oreb oreo orer ores orex oro- oroe oror oros orot orro orrs orse orso orte orto orts osbe osee oser oses oset osoo osor osos osro ossb osse osso oste ostr osts otbs otee oter otes oto- otoe otoo otor otos otre otro otrs otse otso otte otto otts oxer oxes oxo- oxos oxox oxxo rbbb rbbr rbbs rbss rbst rebb rebe rebo rebs reeb rees reet reos reot rere rero rers rert rese reso ress rest rete reto retr rets rett rexx rob- robb robe robo robs robt roer roes roet roob roor roos root roox rore roro rort rose roso ross rost rote roto rotr rots rott roxo rrrr rsee rsos rsre rsts rtee rtes rtex rtss rtts rxes s-os sbbs sber sbor sbot sbse sbst se-e se-o se-s se-t se-x sebe sebo sebs sebt seeb seer sees seet seex serb sere sero serr sers sert sese seso sess sest set- sete seto sets sett setx sex- sexe sext sobe sobo sobr sobs sobt soeo soes soor soos soot sorb sore soro sorr sors sort sose soso soss sost sote soto sots soxs sreb sreo sres sros srtr ssbr ssee sses sset ssex ssot ssrs sssb ssss sstb ssts stbs stee steo ster stes stet stex stob stoe stoo stor stos stot stox stre stro strs stss sttr tbbs tbox tbrb tbst tebo teer tees teet teor teos ter- tere tero terr ters tese teso tess test tete teto tetr tets tett tetx text tobe tobo tobs tobt toee toer toes toet toor toos toot tore toro torr tors tort torx tosb tose toso toss tost tosx tote toto totr tots tott tox- toxo toxs toxt tre- tree treo tres tret trex troe troo tros trot trox trst trte trtr tses tset tsob tsos tsse tssr tsst tsts ttbb tteo tter ttoe ttss tttt txtr xbee xbox xeer xer- xero xers xert xexe xoro xors xote xoxo xtbs xtro xtsr xxxo xxxx

-tree bbbee bbser be-er be-ro beber bebes bebot bebox beebe beebs beers beest beete beets beost beote berbe beres beret berob beroe beror berre berse berte berto berts besee beset besob besos besot besse besso beste bests betee beter betes betoo betor betre betrs betso bett- bette betto betts bo-bo bobet bobos bobr bobre bobst bobts boero boers boese boets boobs booer boore boors boort boose boost boots bootx borbo boree borer bores boret borex boro- boroo boros borot borox borre borro borse borst borts boset bosor bosox bosse bosso boste botes botet botos botox botro botte botts boxbe boxee boxer boxes bre-x breer brees breet breo- brere brers brese bress brest breto brets brett bretx brobo brobs broer broos brose bross broto brrrr btr-t e-box ebber ebbet ebers ebert eboes eeeee eeros eorre eoste erbbe erber erebs erere erest erets eroes eroor eroos erore erose eross eroto erres error erses erste ersts erte erter ertes esere esser esses essex essor