-er bbb bbd bbe bbo bbr bbt bdb bdd bde bdo bdr bdt bdv be- beb bed bee beo ber bet bev bob bod boe boo bor bot bov brb brd bre bro brr brt brv btb btd bte bto btr btt btv bvb bvd bve bvo bvr bvt bvv dbb dbd dbe dbo dbr dbt dbv ddb ddd dde ddo ddr ddt de- deb ded dee deo der det dev dob dod doe doo dor dot dov drb drd dre dro drr drt drv dtb dtd dte dto dtr dtt dtv dvb dvd dve dvr dvt ebb ebd ebe ebo ebr ebt ebv ed- edb edd ede edo edr edt eeb eed eee eeo eer eet eev eo- eob eod eoe eoo eor eot erb erd ere ero err ert erv etb etd ete eto etr ett etv evb evd eve evo evr evt evv ob- obb obd obe obo obr obt obv odb odd ode odo odr odt odv oeb oed oee oeo oer oet oo- oob ood ooo oor oot oov or- orb ord ore oro orr ort orv ot- otb otd ote oto otr ott otv ov- ovb ovd ove ovo ovv rbb rbd rbe rbo rbr rbt rdb rdd rde rdo rdr rdt rdv re- reb red ree reo rer ret rev rob rod roe roo ror rot rov rrb rrd rrr rrt rtb rtd rte rto rtr rtt rtv rvb rvd rve rvo rvr rvt rvv tbb tbd tbe tbo tbr tbt tbv tdb tdd tde tdo tdr tdt tdv te- teb ted tee teo ter tet tev to- tob tod toe too tor tot tov trb trd tre tro trr trt trv ttb ttd tte tto ttr ttt ttv tvb tvd tve tvo tvr tvt v-e vbd vbo vbr vbv vdb vdd vde vdo vdr vdt vdv veb ved vee veo ver vet vob vod voe voo vor vot vov vrb vrd vre vrr vrt vtb vte vto vtr vtt vtv vvb vvo vvr vvt vvv

bbbb bbdd bbdo bbeb bbet bd-r bebb bebe bebo bede bedo beeb beed beer beet beo- beod beor beot berd bere bero berr bert bete beto bett betv bevo bobb bobe bobo bodb bode bodo boee boeo boer boet boob bood booe boor boot bor- bord bore boro borr bort botb botd bote boto bott bove bovo brdo brdt breb bred bree breo brer bret brev brob brod broe broo bror brot brrr btdt btob btor btrt bttb d-bo d-tv dbtt dddd ddot ddre ddtv debe debt dedd dede dedo deeb deed deer deet deev deor der- derb dere dero derr derv dete deto detr deve devo dobb dobe dod- dodd dode dodo doer doob dood door doot dord dore doro dorr dort dotd dote doto dott dove dred dree dret drev drob drod drot dted dtor dtot dvdr dvor ebbo ebbr ebed eber eboe eboo ebor ebro edde eddo ede- eder edod edtv edve eede eeee eero eete eode eore eotd eoto erbb erbe erde ereb ered erer eret erev erob erod eroe eroo erre erro erve etbr etee eter etoe etre etro ette etto etvo evdb ever evet evoe evoo evre o-eo obbo obdt obed ober obet oboe obor obot obre obro obtd odbo oddd oded odeo oder odet odoo odor odot oedo oere oobe ooer oooo oord oore oort ootb orbb orbe orbo orde ordo ore- oreb ored oreo orer oro- oroe oror orot orro orte orto orve orvr otbd oted otee oter oto- otoe otoo otor otov otre otro otte otto ovde ovee over ovet ovo- ovod ovoo ovot ovre rbbb rbbr rder rdev rebb rebe rebo redd rede redo redr reeb reed reet reev reod reot rerd rere rero rert retd rete reto retr rett revd reve revo rob- robb robe robo robt rodd rode rodo roed roer roet roev roob rood roor root rore roro rort rote roto rotr rott rove rovo rred rrrr rtdt rtee rtve rved rver tbrb tddb tdor tdtv tebo tedd tede teed teer teet teev teor ter- tere tero terr tete teto tetr tett tobe tobo tobt todd tode todo todt toed toee toer toet tood toor toot tord tore toro torr tort torv totd tote toto totr tott tove tovo tre- tred tree treo tret trev trod troe troo trot trte trtr ttbb tteo tter ttoe tttt tver tvro tvrr tvtv vder vdot vdre vede vedo veer veet veor ver- verb verd vere vero vert vete veto vetr veve vevo vode vodo voer voet voor voot vor- vord vore voro vort votd vote voto vred vreo vret vrot vrto vver vvob vvvv

-tree b-e-d bbbee bd-re bdoor bdort be-er be-ro bebdo bebed beber bebod bebot bedde bedee beder bedet bedot beebe beede beerd beete beeve beode beord beote berbe berde bered beret berob beroe beror berre berte berto betee beter betoo betor betre bett- bette betto bever bevor bo-bo bobet bobov bobr bobre bodd- boded boder bodoe bodor boedo boero boode booed booer boord boore boort borbo borde bordo bored boree borer boret boro- borod boroo borot borov borre borro borve borvo botet botev botro botte bovee bredd brede bredt breed breer breet breo- brerd brere breto brett breve brobo brodd brode brodo broer brood broto brrrr btr-d btr-t d-dot d-rev d-rod ddddd ddebo debed deber debet debot debro debte dedde dedee deder deede deere deeve deore deoro derbe derde dered dero- derob derre derro derve deter detoo detre dette dever devet devoe devor devot devro do-do dobee dober dobev dobre dobro dodoo dodro doerr doodo doore doote dordt dored doree doret dorot dorre dorte doted doter dotoo dotto dover dovev dovre drbob drdre dredd drede dreed drere dreve drobe drobo drode drood drote drott drove dvb-t dvd-d dvd-r e-dee e-otd ebbed ebber ebbet ebert edder eddoe eddre edeo- edere edoor edott edred eeeee eerde eevee eever eorre erbbe erber erdor erdre erede erere ereve erode erodr eroor erore eroto erred error erte erter etete etoro etree etter evdev evere evero everr evert evete evett