-er b-p bbb bbd bbe bbo bbp bbr bbt bdb bdd bde bdo bdp bdr bdt be- beb bed bee beo bep ber bet bob bod boe boo bop bor bot bpb bpd bpe bpo bpp bpr bpt brb brd bre bro brp brr brt btb btd bte bto btp btr btt dbb dbd dbe dbo dbp dbr dbt ddb ddd dde ddo ddp ddr ddt de- deb ded dee deo dep der det dob dod doe doo dop dor dot dpb dpd dpe dpo dpp dpr dpt drb drd dre dro drp drr drt dtb dtd dte dto dtp dtr dtt ebb ebd ebe ebo ebp ebr ebt ed- edb edd ede edo edp edr edt eeb eed eee eeo eep eer eet eo- eob eod eoe eoo eop eor eot ep- epb epd epe epo epp epr ept erb erd ere ero erp err ert etb etd ete eto etp etr ett ob- obb obd obe obo obp obr obt odb odd ode odo odp odr odt oeb oed oee oeo oep oer oet oo- oob ood ooo oop oor oot op- opb opd ope opo opp opr opt or- orb ord ore oro orp orr ort ot- otb otd ote oto otp otr ott p-p pbb pbd pbe pbo pbp pbr pbt pdb pdd pde pdo pdp pdr pdt peb ped pee peo pep per pet pob pod poe poo pop por pot ppb ppd ppe ppo ppp ppr ppt prb prd pre pro prp prr prt pt- ptb ptd pte pto ptp ptr ptt rbb rbd rbe rbo rbp rbr rbt rdb rdd rde rdo rdp rdr rdt re- reb red ree reo rep rer ret rob rod roe roo rop ror rot rpb rpd rpe rpo rpp rpr rpt rrb rrd rrp rrr rrt rtb rtd rte rto rtp rtr rtt tbb tbd tbe tbo tbp tbr tbt tdb tdd tde tdo tdp tdr tdt te- teb ted tee teo tep ter tet to- tob tod toe too top tor tot tpb tpd tpe tpo tpp tpr tpt trb trd tre tro trp trr trt ttb ttd tte tto ttp ttr ttt

bbbb bbdd bbdo bbeb bbet bbpr bd-r bebb bebe bebo bede bedo beeb beed beep beer beet beo- beod beor beot bepo berd bere bero berr bert bete beto bett bobb bobe bobo bodb bode bodo boee boeo boep boer boet boob bood booe boop boor boot bope bopp bor- bord bore boro borr bort botb botd bote boto bott bpoe bpot bprd brdo brdt breb bred bree breo brep brer bret brob brod broe broo bror brot brrr btbp btdt btob btor btrt bttb d-bo dbpd dbtt dddd ddot ddpo ddre debe debt dedd dede dedo deeb deed deep deer deet deop deor depe depo depp depr dept der- derb dere dero derp derr dete deto detr dobb dobe dod- dodd dode dodo doer doob dood doop door doot dope dopo dopp dopr dopt dord dore doro dorp dorr dort dotd dote doto dott dpdt dper dred dree dret drob drod drop drot dtdp dted dtor dtot dttp ebbo ebbr ebed eber eboe eboo ebor ebpo ebro edde eddo eddp ede- eder edod eede eeee eero eete eode eore eotd eoto epee eper epod epor epot eppo eppp eprb epro eprp epte erbb erbe erde ereb ered erer eret erob erod eroe eroo erpe erre erro etbr etee eter etoe etre etro ette etto o-eo obbo obdt obed ober obet oboe obor obot obre obro obtd odbo oddd oded odeo oder odet odoo odop odor odot odrp oedo oere oobe ooer oooo oord oore oort ootb ootp oped opep oper opet opo- opor oppo opto orbb orbe orbo orde ordo ore- oreb ored oreo orer oro- oroe oror orot orpe orro orte orto otbd oted otee otep oter oto- otoe otoo otor otpp otre otro otte otto pbed pdpr ped- pede pedo peed peep peer peet peor pepd pepe pepo per- perd pere pero perp perr pert pete peto petr pett pobo pod- podd pode podo poed poer poet pood poop poor poot pop- pope popo popp popt porb pore poro porr port potd pote poto pott pper ppod pppd pppo pppp pptt pre- preb pred pree prep pret pro- prob prod proe proo prop prot prpd prrd prtp prtr pter ptop ptpd ptrd rbbb rbbr rdbp rder rebb rebe rebo redd rede redo redr reeb reed reep reet reod reop reot repe repo repp repr rept rerd rere rero rert retd rete reto retr rett rob- robb robe robo robt rodd rode rodo roed roer roet roob rood roop roor root rope ropo rore roro rort rote roto rotr rott rpdp rpet rpob rpoe rptd rred rrrr rtdt rtee rttp tbrb tbtp tddb tdor tebo tedd tede teed teer teet teor tepe tepp ter- tere tero terp terr tete teto tetr tett tobe tobo tobt todd tode todo todt toed toee toer toet tood toor toot top- topd tope topo topp topt tord tore toro torp torr tort totd tote toto totr tott tped tper tppd tppp tppr tpte tptp tptr tre- tred tree treo tret trod troe troo trop trot trpe trpp trte trtr ttbb tteo tter ttoe ttop tttt

-tree b-e-d bbbee bd-re bdoor bdort be-er be-ro bebdo bebed beber bebod bebop bebot bedde bedee beder bedet bedot beebe beede beerd beete beode beord beote bepop beppe beppo 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 boode booed booer boord boore boort bopet borbo borde bordo bored boree borer boret boro- borod boroo borot borre borro botet botro botte bredd brede bredt breed breer breet breo- brerd brere breto brett brobo brodd brode brodo broer brood broto brrrr btr-d btr-t d-dot d-rod ddddd ddebo debed deber debet debot debro debte dedde dedee deder deede deepe deepp deere deore deoro depbt depoe depop depor depot derbe derde dered dero-