-er bbb bbe bbf bbg bbo bbr bbt be- beb bee bef beg beo ber bet bfb bfe bff bfg bfo bfr bft bgb bge bgf bgg bgo bgr bgt bob boe bof bog boo bor bot brb bre brf brg bro brr brt btb bte btf btg bto btr btt ebb ebe ebf ebg ebo ebr ebt eeb eee eef eeg eeo eer eet ef- efb efe eff efg efo efr eft egb ege egf egg ego egr egt eo- eob eoe eof eog eoo eor eot erb ere erf erg ero err ert etb ete etf etg eto etr ett fbb fbe fbf fbg fbo fbr fbt feb fee fef feg feo fer fet ffe fff ffg ffo ffr fft fgb fge fgf fgg fgr fgt fob foe fof fog foo for fot frb fre frf frg fro frr frt ftb fte ftf ftg fto ftr ftt gbe gbf gbg gbo gbr gbt ge- geb gee gef geg geo ger get gfb gfe gff gfo gfr gft ggb ggg ggo ggr ggt gob goe gof gog goo gor got grb gre grf grg gro grr grt gtb gte gtf gtg gto gtr gtt ob- obb obe obf obg obo obr obt oeb oee oef oeg oeo oer oet of- ofb ofe off ofg ofo ofr oft oge ogf ogg ogo ogt oo- oob oof oog ooo oor oot or- orb ore orf org oro orr ort ot- otb ote otf otg oto otr ott rbb rbe rbf rbg rbo rbr rbt re- reb ree ref reg reo rer ret rfb rfe rff rfg rfo rfr rft rgb rge rgf rgg rgo rgr rgt rob roe rof rog roo ror rot rrb rrf rrg rrr rrt rtb rte rtf rtg rto rtr rtt tbb tbe tbf tbg tbo tbr tbt te- teb tee tef teg teo ter tet tfb tfe tff tfg tfo tfr tft tgb tge tgf tgg tgo tgr tgt to- tob toe tof tog too tor tot trb tre trf trg tro trr trt ttb tte ttf ttg tto ttr ttt

bbbb bbeb bbet bbrg bebb bebe bebo beeb beef beeg beer beet befe beff befo beft begg bego beo- beof beor beot bere berg bero berr bert bete beto bett bfgf bftt bobb bobe bobo boee boef boeo boer boet bofe boff boge bogg bogo bogt boob booe boof boog boor boot bor- bore borf borg boro borr bort botb bote boto bott breb bree bref breg breo brer bret brob broe brog broo bror brot brrr btob btor btrt bttb ebbo ebbr eber eboe eboo ebor ebro eeee eefe eerg eero eete ef-g efbr efeo efet efor eft- egbe egee eger egfr eggb egge eggo ego- egor egot egre egte eore eoto erbb erbe ereb erer eret erft erg- ergg ergo erob eroe eroo erre erro etbr etee eter etfb etfe etoe etre etro ette etto febo feeb feer feet fefe feff fefo fege fegg feof ferb fere fero ferr fert fete fetr fett ffee ffff ffrr fftf fobt foer fofo foge fogg fogo foof foot for- forb fore forg foro forr fort fote foto fott free freo fret frob froe frog frot fter gbbo gebe geer geet gefe geft gege gegg gego geo- geof geog gerb gere gero gert getb gete getg geto gett gfer gfor ggbt ggfg gggg gobe gobo goef goer gofe goff gofr gogo goof goog goor goot gorb gore gorf gorg goro gorr gort gote goto gott grbr greb gree gref greg gret grob grof grog groo gror grot grrr gtbr gtfo gtoe o-eo obbo ober obet oboe obor obot obre obro oegb oere ofer off- offe offo offr ofgo ofor ofre ogb ogbe ogee oger ogfr ogge ogog ogre ogro oobe ooer ooff oooo oore oort ootb orbb orbe orbo ore- oreb oreg oreo orer orfe orff orge orgo oro- oroe orof oror orot orro orte orto otee oter oto- otoe otof otog otoo otor otre otro otte otto rbbb rbbr rebb rebe rebo reeb reef reet refe reff refg refr reft rege rego regr regt reof reog reot rere rerg rero rert rete reto retr rett rfef rgbe rgtr rob- robb robe robo robt roeg roer roet rofe roff rofo roge rogg rogo roob roof roog roor root rore roro rort rote rotg roto rotr rott rrrr rtbf rtee rtfb tbrb tebo teef teer teet teff teft tegg tego tegt teor ter- tere terf tero terr tete teto tetr tett tfeb tfot tobe tobo tobt toee toer toet toff tofo toft toge togo togr togt toof toor toot tore torf torg toro torr tort tote toto totr tott tre- tree tref treg treo tret trfr trge troe trog troo trot trte trtr ttbb tteo tter ttff ttoe tttt

-tree bbbee be-er be-ro beber bebog bebot beebe beeft beete beffe befoe befog befor begee beget begge begob begof begor begot begto beofe beoff beote berbe bereg beret berge berob beroe beror berre berte berto betee beter betoo betor betre bett- bette betto bfrog bo-bo bobet bobr bobre boege boero bofet boffo boger boget bogge bogoe bogof bogor bogot booer boore boort borbo boree borer boret borge borgo boro- boroo borot borre borro botet botro botte breef breer breet breg- brege bregg breo- brere breto brett brobo broer broft broto brrrr btr-t ebber ebbet eberg ebert eeeee efere efetf effer effet efore efter egger egret eofor eorre erbbe erber erege erere ergo- ergot eroge eroor erore eroto error erte erter etete etoro etree etrog etter febre feeor feere fefor feoff feret ferr- ferre ferro ferte feter feto- fetor fette fogbo foggo foore foote fore- foreo foret forge forgo forro forte forto fotte freer freet frege frere frett frobe froot frore frote ftrtt gberg gbfte geber gebet gebre geebo geere geert geete gefte gegge geoff georg gerbe gerbo gerre gertt getee geter getgo gette getto go-go go-oo go-to gobbe gobbo gobeo gobet gobot gofer goffe gofor goget gogro goobo gooff googe goore goote gorbe goree gorer gorge gorgo gorre goter