-er bbb bbd bbe bbf bbo bbr bbt bdb bdd bde bdf bdo bdr bdt be- beb bed bee bef beo ber bet bfb bfd bfe bff bfo bfr bft bob bod boe bof boo bor bot brb brd bre brf bro brr brt btb btd bte btf bto btr btt dbb dbd dbe dbf dbo dbr dbt ddb ddd dde ddf ddo ddr ddt de- deb ded dee def deo der det dfb dfd dfe dff dfo dfr dft dob dod doe dof doo dor dot drb drd dre dro drr drt dtb dtd dte dtf dto dtr dtt ebb ebd ebe ebf ebo ebr ebt ed- edb edd ede edf edo edr edt eeb eed eee eef eeo eer eet ef- efb efd efe eff efo efr eft eo- eob eod eoe eof eoo eor eot erb erd ere erf ero err ert etb etd ete etf eto etr ett fbb fbd fbe fbf fbo fbr fbt fdb fdd fde fdf fdo fdr fdt feb fed fee fef feo fer fet ffd ffe fff ffo ffr fft fob foe fof foo for fot frb frd fre frf fro frr frt ftb ftd fte ftf fto ftr ftt ob- obb obd obe obf obo obr obt odb odd ode odf odo odr odt oeb oed oee oef oeo oer oet of- ofb ofd ofe off ofo ofr oft oo- oob ood oof ooo oor oot or- orb ord ore orf oro orr ort ot- otb otd ote otf oto otr ott rbb rbd rbe rbf rbo rbr rbt rdb rdd rde rdf rdo rdr rdt re- reb red ree ref reo rer ret rfb rfd rfe rff rfo rfr rft rob rod roe rof roo ror rot rrb rrd rrf rrr rrt rtb rtd rte rtf rto rtr rtt tbb tbd tbe tbf tbo tbr tbt tdb tdd tde tdf tdo tdr tdt te- teb ted tee tef teo ter tet tfb tfd tfe tff tfo tfr tft to- tob tod toe tof too tor tot trb trd tre trf tro trr trt ttb ttd tte ttf tto ttr ttt

bbbb bbdd bbdo bbeb bbet bd-r bebb bebe bebo bede bedo beeb beed beef beer beet befe beff befo beft beo- beod beof beor beot berd bere bero berr bert bete beto bett bftt bobb bobe bobo bodb bode bodo boee boef boeo boer boet bofd bofe boff boob bood booe boof boor boot bor- bord bore borf boro borr bort botb botd bote boto bott brdo brdt breb bred bree bref breo brer bret brob brod broe broo bror brot brrr btdt btob btor btrt bttb d-bo dbfo dbtt dddd ddot ddre debe debt dedd dede dedo deeb deed deef deer deet defe deff defo deft deor der- derb dere derf dero derr dete deto detr dfdt dfer dfoe dfrf dftr dobb dobe dod- dodd dode dodo doer doff doob dood doof door doot dord dore dorf doro dorr dort dotd dote doto dott dred dree dref dret drob drod drof drot dted dtor dtot ebbo ebbr ebed eber eboe eboo ebor ebro edde eddo ede- eder edod eede eeee eefe eero eete efbr efeo efet efor eft- eode eore eotd eoto erbb erbe erde erdf ereb ered erer eret erft erob erod eroe eroo erre erro etbr etee eter etfb etfe etoe etre etro ette etto fdot febo fede feeb feed feer feet fefe feff fefo feod feof ferb ferd fere fero ferr fert fete fetr fett ffee ffff ffrr fftf fobt fode foed foer fofo food foof foot for- forb ford fore foro forr fort fote foto fott fred free freo fret frob froe frot fter o-eo obbo obdt obed ober obet oboe obor obot obre obro obtd odbo oddd oded odeo oder odet odoo odor odot oedo oere ofdr ofer off- offe offo offr ofor ofre oobe ooer ooff oooo oord oore oort ootb orbb orbe orbo orde ordo ore- oreb ored oreo orer orfe orff oro- oroe orof oror orot orro orte orto otbd oted otee oter oto- otoe otof otoo otor otre otro otte otto rbbb rbbr rder rebb rebe rebo redd rede redo redr reeb reed reef reet refd refe reff refr reft reod reof reot rerd rere rero rert retd rete reto retr rett rfef rob- robb robe robo robt rodd rode rodo roed roer roet rofe roff rofo roob rood roof roor root rore roro rort rote roto rotr rott rred rrrr rtbf rtdt rtee rtfb tbrb tddb tdff tdor tebo tedd tede teed teef teer teet teff teft teor ter- tere terf tero terr tete teto tetr tett tfeb tfot tobe tobo tobt todd tode todo todt toed toee toer toet toff tofo toft tood toof toor toot tord tore torf toro torr tort totd tote toto totr tott tre- tred tree tref treo tret trfd trfr trod troe troo trot trte trtr ttbb tteo tter ttff ttoe tttt

-tree b-e-d bbbee bd-re bdoor bdort be-er be-ro bebdo bebed beber bebod bebot bedde bedee beder bedet bedof bedot beebe beede beeft beerd beete beffe befoe befor beode beofe beoff beord beote berbe berde bered beret berob beroe beror berre berte berto betee beter betoo betor betre bett- bette betto bo-bo bobet bobr bobre bodd- boded boder bodoe bodor boedo boero bofet boffo boode booed booer boord boore boort borbo borde bordo bored boree borer boret boro- borod boroo borot borre borro botet botro botte bredd brede bredt breed breef breer breet breo- brerd brere breto brett brobo brodd brode brodo broer broft brood broto brrrr btr-d btr-t d-dot d-rod ddddd ddebo debed deber debet debot debro debte debtf dedde dedee deder deede deefe deeff deere defed defeo defer defet deffe deffo defoe defot deore deoro derbe derde dered dero- derob derre derro deter detoo detre dette do-do dobee dober dobre dobro dodoo dodro doerr dofor doodo doore doote dordt dored doree doret dorff dorot dorre dorte doted doter dotoo dotto drbob drdre dredd drede dreed dreff dreft dreof drere