-er -ol b-p bbb bbe bbl bbo bbp bbr bbt be- beb bee bel beo bep ber bet blb ble bll blo blp blr blt bob boe bol boo bop bor bot bpb bpe bpl bpo bpp bpr bpt brb bre brl bro brp brr brt btb bte btl bto btp btr btt ebb ebe ebl ebo ebp ebr ebt eeb eee eel eeo eep eer eet elb ele ell elo elp elr elt eo- eob eoe eol eoo eop eor eot ep- epb epe epl epo epp epr ept erb ere erl ero erp err ert etb ete etl eto etp etr ett l-p lbb lbe lbl lbo lbp lbr lbt leb lee lel leo lep ler let llb lle lll llo llp llr llt lob loe lol loo lop lor lot lpb lpe lpl lpo lpp lpr lpt lrb lro lrp lrr lrt ltb lte ltl lto ltp ltr ltt ob- obb obe obl obo obp obr obt oeb oee oel oeo oep oer oet olb ole oll olo olp olt oo- oob ool ooo oop oor oot op- opb ope opl opo opp opr opt or- orb ore orl oro orp orr ort ot- otb ote otl oto otp otr ott p-p pbb pbe pbl pbo pbp pbr pbt peb pee pel peo pep per pet plb ple pll plo plp plr plt pob poe pol poo pop por pot ppb ppe ppl ppo ppp ppr ppt prb pre prl pro prp prr prt pt- ptb pte ptl pto ptp ptr ptt rbb rbe rbl rbo rbp rbr rbt re- reb ree rel reo rep rer ret rle rll rlo rlp rlr rlt rob roe rol roo rop ror rot rpb rpe rpl rpo rpp rpr rpt rrb rrl rrp rrr rrt rtb rte rtl rto rtp rtr rtt tbb tbe tbl tbo tbp tbr tbt te- teb tee tel teo tep ter tet tle tll tlo tlp tlr tlt to- tob toe tol too top tor tot tpb tpe tpl tpo tpp tpr tpt trb tre trl tro trp trr trt ttb tte ttl tto ttp ttr ttt

bbbb bbeb bbet bblb bbpr bebb bebe bebo beeb beel beep beer beet bele bell belo belp belt beo- beor beot bepo bere bero berr bert bete beto bett blbt bleb blee bleo blet blob bloo blop blot bobb bobe bobo boee boel boeo boep boer boet bole boll bolo bolt boob booe bool boop boor boot bope bopp bor- bore boro borr bort botb bote boto bott bpel bpoe bpot breb bree brel breo brep brer bret brlp brob broe brol broo bror brot brrr btbp btlp btob btor btrt bttb ebbo ebbr ebel eber eboe ebol eboo ebor ebpo ebro eeee eele eero eete el-b el-p elbe elbo elee eleo eler elet elle ello elpe elro elte elto eole eolo eore eorl eoto epee eper eple epll epol epor epot eppo eppp eprb epro eprp epte erbb erbe ereb erel erer eret erle erll erob eroe erol eroo erpe erre erro ertl etbr etee etel eter etoe etre etro ette etto lblr lbrt lebo leel leep leer leet lele lell lelo leor lepe lepo lepp lept lere lero lerp lert lete leto lett llet llll lloo lob- lobb lobe lobo loeb lole loll lolo loob looe lool loop loor loot lope lopp lore loro lote lotl loto lotr lott lppl lprp lptb lrrr ltbl ltee lttr o-eo obbo obel ober obet oble oboe obol obor obot obre obro oele oere olbo ole- oleo oler olet olle ollo olor olot olpe oobe ooer oolo oooo oore oort ootb ootp opel opep oper opet ople opo- opor oppo opto orbb orbe orbo ore- oreb orel oreo orer orle orlo oro- oroe oror orot orpe orro orte orto otee otep oter oto- otoe otoo otor otpp otre otro otte otto pebl peel peep peer peet pel- pelb pele pell pelo pelt peor pepe pepo per- pere perl pero perp perr pert pete peto petr pett plbr ple- pleb plee pleo plet plob ploo plop plot plpp pltt pobo poel poer poet pole poll polo polt pool poop poor poot pop- pope popo popp popt porb pore poro porr port pote poto pott pper pple pplo pppo pppp pptt pre- preb pree prel prep pret prle prlr pro- prob proe prol proo prop prot prtp prtr ptbl pter ptol ptop rbbb rbbr rble rebb rebe rebo reeb reel reep reet relb rele rell relo relp relt reol reop reot repe repl repo repp repr rept rere rero rert rete reto retr rett rlee rob- robb robe robo robt roel roer roet role roll rolo rolp rolt roob rool roop roor root rope ropo rore roro rort rote rotl roto rotr rott rpet rpob rpoe rrle rrrr rtee rtle rtlt rttp tbrb tbtp tebo teel teer teet tel- tele tell telo telt teor tepe tepp ter- tere tero terp terr tete teto tetr tett tobe tobo tobt toee toer toet tol- tole toll tolo tolt tool toor toot top- tope topo topp topt tore toro torp torr tort tote toto totr tott tper tpol tppp tppr tpte tptp tptr tre- tree treo tret troe troo trop trot trpe trpp trte trtr ttbb tteo tter ttoe ttop tttt

-tree bbbee be-er be-ro bebel beber beblo bebop bebot beebe beele beete belbo belee belep belet bellb belle bello belot beote bepop beppe beppo berbe berel beret berle berlo berob beroe berol beror berre berte berto betee betel beter betle betoo betor betre bett- bette betto bleep bleer bleet blere blerp blete bloop bloor blorb blore blorp blort blote bloto blott bo-bo bobet boble bobr bobre boeol boero bolbe bolel boleo boler bolet boll- bolle bollo bolte bolto booer boole boore boort bopet borbo boree borel borer boret borle boro- boroo borot borre borro botel botet botro botte breel breer breet brell brelo breo- brere breto brett brobo broer brole broll brolo brool broto brrrr btr-t e-pro ebber ebbet ebble ebell ebelo eberl ebert