-er b-p bbb bbe bbm bbo bbp bbr bbt be- beb bee bem beo bep ber bet bmb bme bmm bmo bmp bmr bmt bob boe bom boo bop bor bot bpb bpe bpm bpo bpp bpr bpt brb bre brm bro brp brr brt btb bte btm bto btp btr btt ebb ebe ebm ebo ebp ebr ebt eeb eee eem eeo eep eer eet em- emb eme emm emo emp emr emt eo- eob eoe eom eoo eop eor eot ep- epb epe epm epo epp epr ept erb ere erm ero erp err ert etb ete etm eto etp etr ett m-o m-r mbb mbe mbm mbo mbp mbr mbt meb mee mem meo mep mer met mmb mme mmm mmo mmp mmr mmt mob moe mom moo mop mor mot mpb mpe mpm mpo mpp mpr mpt mrb mre mrm mro mrp mrr mrt mtb mte mtm mto mtp mtr mtt ob- obb obe obm obo obp obr obt oeb oee oem oeo oep oer oet om- omb ome omm omo omp omr omt oo- oob oom ooo oop oor oot op- opb ope opm opo opp opr opt or- orb ore orm oro orp orr ort ot- otb ote otm oto otp otr ott p-p pbb pbe pbm pbo pbp pbr pbt peb pee pem peo pep per pet pmb pme pmm pmo pmp pmr pmt pob poe pom poo pop por pot ppb ppe ppm ppo ppp ppr ppt prb pre prm pro prp prr prt pt- ptb pte ptm pto ptp ptr ptt rbb rbe rbm rbo rbp rbr rbt re- reb ree rem reo rep rer ret rmb rme rmm rmo rmp rmr rmt rob roe rom roo rop ror rot rpb rpe rpm rpo rpp rpr rpt rrb rrm rrp rrr rrt rtb rte rtm rto rtp rtr rtt tbb tbe tbm tbo tbp tbr tbt te- teb tee tem teo tep ter tet tmb tme tmm tmo tmp tmr tmt to- tob toe tom too top tor tot tpb tpe tpm tpo tpp tpr tpt trb tre trm tro trp trr trt ttb tte ttm tto ttp ttr ttt

bbbb bbeb bbet bbpr bebb bebe bebo beeb beem beep beer beet beme beo- beor beot bepo bere berm bero berr bert bete beto bett bmep bmop bmpt bobb bobe bobo boee boeo boep boer boet bomb bome bomp bomt boob booe boom boop boor boot bope bopp bor- bore borm boro borr bort botb bote boto bott bpoe bpot breb bree brem breo brep brer bret brob broe brom broo bror brot brrm brrr btbp btob btor btrt bttb ebbo ebbr eber eboe eboo ebor ebpo ebro eeee eemo eero eete embe embo embr emer emet emme emor empe empt emre emte emtp eore eoto epbm epee eper epmo epor epot eppo eppp eprb epro eprp epte erbb erbe ereb erem erer eret erme ermo erob eroe eroo erpe erre erro etbr etee etem eter etoe etre etrm etro ette etto mebe mebo meem meep meer meet meme memo memr meor mepe mer- merb mere merm mero merp mert met- mete meto mett mmmm mmor mmpr mmrp mobb mobe mobo moet mome momo moob mooe moop moor moot mope mopp morb more moro mort motb mote motm moto mott mppe mppp mpro mprp mptp mrbb mrbm mreb mree mrtm mrtt mtbo mtep mtoe mtom mtor mtre mtrr mttr o-eo obbo ober obet oboe obor obot obre obro oeme oere oerm ombe ombo omee omeo omer omet omo- omoe omoo omor ompt omre omro oobe ooer oome oooo oore oort ootb ootp opep oper opet opo- opor oppo opto orbb orbe orbo ore- oreb orem oreo orer orme ormo oro- oroe orom oror orot orpe orro orte orto otee otem otep oter oto- otoe otoo otor otpp otre otro otte otto pbmr peep peer peet pemt peor pepe pepo per- pere perm pero perp perr pert pete peto petr pett pmbr pmmp pmpm pmpo pmrt pobo poem poer poet pome pomo pomp poop poor poot pop- pope popo popp popt porb pore poro porr port pote poto pott pper pppo pppp pprm pptt pre- preb pree prem prep pret pro- prob proe prom proo prop prot prrm prtm prtp prtr pter ptmp ptop rbbb rbbr rebb rebe rebo reeb reem reep reet reme remo remp reop reot repe repo repp repr rept rere rero rert rete reto retr rett rmrp rob- robb robe robo robt roer roet romb rome romm romo romp roob room roop roor root rope ropo rore roro rort rote roto rotr rott rpet rpob rpoe rrmp rrrr rtee rtmp rttp t-mo tbrb tbtp tebo teem teer teet teme temo temp teom teor tepe tepp ter- tere term tero terp terr tete teto tetr tett tmbr tmep tmro tmtt tobe tobo tobt toee toer toet tomb tome tomm tomo tomp tomt toom toor toot top- tope topo topp topt tore torm toro torp torr tort tote totm toto totr tott tper tpmt tppp tppr tpte tptp tptr tre- tree trem treo tret trmb troe trom troo trop trot trpe trpm trpp trte trtr ttbb tteo tter ttoe ttop tttt

-tree bbbee be-er be-ro beber bebop bebot beebe beete bembe bembo bemer bemet beote bepop beppe beppo berbe beret berme bermo berob beroe berom beror berre berte berto betee beter betoo betor betre bett- bette betto bmp-r bo-bo bobet bobr bobre boeme boero bombe bombo bomer bomet bomme booer boomb boore boort bopet borbo boree borer boret bormo boro- borom boroo borot borre borro botet botme botom botro botte breem breer breet breme bremm bremo breo- brere breto brett brmmm brobo broer brom- brome bromo broom broto brrrr btr-t e-pro ebber ebbet ebert eeeee eepee embee ember embro emeer emere emert emmer emmet emore emote emoto empee empte emtee eomer eorre epome epopt epote epptb eprom erbbe erber erem- eremo erept erere erome eroom eroor erore eroto error erte erter etete etoro etree etter mbebe mbere mboro mbret mebbe