-er -ol bbb bbe bbf bbl bbo bbr bbt be- beb bee bef bel beo ber bet bfb bfe bff bfl bfo bfr bft blb ble blf bll blo blr blt bob boe bof bol boo bor bot brb bre brf brl bro brr brt btb bte btf btl bto btr btt ebb ebe ebf ebl ebo ebr ebt eeb eee eef eel eeo eer eet ef- efb efe eff efl efo efr eft elb ele elf ell elo elr elt eo- eob eoe eof eol eoo eor eot erb ere erf erl ero err ert etb ete etf etl eto etr ett fbb fbe fbf fbl fbo fbr fbt feb fee fef fel feo fer fet ffe fff ffl ffo ffr fft flb fle flf fll flo flr flt fob foe fof fol foo for fot frb fre frf frl fro frr frt ftb fte ftf ftl fto ftr ftt lbb lbe lbf lbl lbo lbr lbt leb lee lef lel leo ler let lfb lfe lff lfl lfo lfr lft llb lle llf lll llo llr llt lob loe lof lol loo lor lot lrb lrf lro lrr lrt ltb lte ltf ltl lto ltr ltt ob- obb obe obf obl obo obr obt oeb oee oef oel oeo oer oet of- ofb ofe off ofl ofo ofr oft olb ole olf oll olo olt oo- oob oof ool ooo oor oot or- orb ore orf orl oro orr ort ot- otb ote otf otl oto otr ott rbb rbe rbf rbl rbo rbr rbt re- reb ree ref rel reo rer ret rfb rfe rff rfl rfo rfr rft rle rlf rll rlo rlr rlt rob roe rof rol roo ror rot rrb rrf rrl rrr rrt rtb rte rtf rtl rto rtr rtt tbb tbe tbf tbl tbo tbr tbt te- teb tee tef tel teo ter tet tfb tfe tff tfl tfo tfr tft tle tlf tll tlo tlr tlt to- tob toe tof tol too tor tot trb tre trf trl tro trr trt ttb tte ttf ttl tto ttr ttt

bbbb bbeb bbet bblb bebb bebe bebo beeb beef beel beer beet befe beff befo beft bele bell belo belt beo- beof beor beot bere bero berr bert bete beto bett bffl bftt blbt bleb blee bleo blet blob bloo blot bobb bobe bobo boee boef boel boeo boer boet bofe boff bole boll bolo bolt boob booe boof bool boor boot bor- bore borf boro borr bort botb bote boto bott breb bree bref brel breo brer bret brob broe brol broo bror brot brrr btob btor btrt bttb ebbo ebbr ebel eber eboe ebol eboo ebor ebro eeee eefe eefl eele eero eete efbr efeo efet efor eft- el-b elbe elbo elee elef eleo eler elet elfe elft elle ello elro elte elto eole eolo eore eorl eoto erbb erbe ereb erel erer eret erft erle erll erob eroe erol eroo erre erro ertl etbr etee etel eter etfb etfe etoe etre etro ette etto fble febo feeb feel feer feet fefe feff fefo fele felf fell felo felt feof ferb fere fero ferr fert fete fetr fett ffee ffff ffrr fftf flee fler flet flob floe floo flor flot fobt foer fofo fole foll folo folr folt foof fool foot for- forb fore forl foro forr fort fote foto fott free freo fret frob froe frol frot ft-l fter ftlb lblr lbrt lebo leef leel leer leet lefe leff left lele lell lelo leof leor lere lero lert lete leto lett llef llet llll lloo lob- lobb lobe lobo loeb lofe loff loft lole loll lolo loob looe loof lool loor loot lore loro lote lotl loto lotr lott lrrr ltbf ltbl ltee lttr o-eo obbo obel ober obet oble oboe obol obor obot obre obro oele oere ofer off- offe offo offr ofor ofre olbo ole- olef oleo oler olet olfe olle ollo olof olor olot oobe ooer ooff oolo oooo oore oort ootb orbb orbe orbo ore- oreb orel oreo orer orfe orff orle orlo oro- oroe orof oror orot orro orte orto otee oter oto- otoe otof otoo otor otre otro otte otto rbbb rbbr rble rebb rebe rebo reeb reef reel reet refe reff refl refr reft relb rele rell relo relt reof reol reot rere rero rert rete reto retr rett rfef rffl rlee rlef rob- robb robe robo robt roel roer roet rofe roff rofl rofo role rolf roll rolo rolt roob roof rool roor root rore roro rort rote rotl roto rotr rott rrle rrrr rtbf rtee rtfb rtle rtlt tbrb tebo teef teel teer teet teff tefl teft tel- tele tell telo telt teor ter- tere terf tero terr tete teto tetr tett tfeb tfot tobe tobo tobt toee toer toet toff tofo toft tol- tole toll tolo tolt toof tool toor toot tore torf toro torr tort tote toto totr tott tre- tree tref treo tret trfr troe troo trot trte trtr ttbb tteo tter ttff ttoe tttt

-tree bbbee be-er be-ro bebel beber beblo bebot beebe beeft beele beete beffe befoe befol befor belbo belee belef belet bellb belle bello belot beofe beoff beote berbe berel beret berle berlo berob beroe berol beror berre berte berto betee betel beter betle betoo betor betre bett- bette betto bleer bleet bleft blere blete bloef bloor blorb blore blort blote bloto blott bo-bo bobet boble bobr bobre boeol boero bofet boffo bolbe bolel boleo boler bolet boll- bolle bollo bolte bolto booer boole boore boort borbo boree borel borer boret borle boro- boroo borot borre borro botel botet botro botte breef breel breer breet brell brelo breo- brere breto brett brobo broer broft brole broll brolo brool broto brrrr btr-t ebber ebbet ebble ebell ebelo eberl ebert eeeee eeler efere efetf effer effet efore eftel efter elbot eleet elele eleo- eleot ellel eller ellet elloe eloee eloff elole eloor elore eloro elote elrob eltro eofor eorre erbbe erber erere eroor erore eroto errol