-er b-p bbb bbe bbn bbo bbp bbr bbt be- beb bee ben beo bep ber bet bnb bne bnn bno bnp bnr bnt bob boe bon boo bop bor bot bpb bpe bpn bpo bpp bpr bpt brb bre brn bro brp brr brt btb bte btn bto btp btr btt ebb ebe ebn ebo ebp ebr ebt eeb eee een eeo eep eer eet en- enb ene enn eno enp enr ent eo- eob eoe eon eoo eop eor eot ep- epb epe epn epo epp epr ept erb ere ern ero erp err ert etb ete etn eto etp etr ett nbb nbe nbn nbo nbp nbr nbt ne- neb nee nen neo nep ner net nnb nne nnn nno nnp nnt no- nob noe non noo nop nor not npb npe npn npo npp npr npt nrb nre nrn nro nrp nrr nrt ntb nte ntn nto ntp ntr ntt ob- obb obe obn obo obp obr obt oeb oee oen oeo oep oer oet on- onb one onn ono onp onr ont oo- oob oon ooo oop oor oot op- opb ope opn opo opp opr opt or- orb ore orn oro orp orr ort ot- otb ote otn oto otp otr ott p-p pbb pbe pbn pbo pbp pbr pbt peb pee pen peo pep per pet pn- pnb pne pnn pno pnp pnr pnt pob poe pon poo pop por pot ppb ppe ppn ppo ppp ppr ppt prb pre prn pro prp prr prt pt- ptb pte ptn pto ptp ptr ptt rbb rbe rbn rbo rbp rbr rbt re- reb ree ren reo rep rer ret rnb rnn rno rnp rnr rnt rob roe ron roo rop ror rot rpb rpe rpn rpo rpp rpr rpt rrb rrn rrp rrr rrt rtb rte rtn rto rtp rtr rtt tbb tbe tbn tbo tbp tbr tbt te- teb tee ten teo tep ter tet tnb tne tnn tno tnp tnr tnt to- tob toe ton too top tor tot tpb tpe tpn tpo tpp tpr tpt trb tre trn tro trp trr trt ttb tte ttn tto ttp ttr ttt

-ene -one bbbb bbeb bbet bbpr bebb bebe bebo beeb been beep beer beet bene benn beno bent beo- beon beor beot bepo bere bern bero berr bert bete beto bett bner bnet bnor bnpp bnrr bobb bobe bobo boee boen boeo boep boer boet bone bonn bono bont boob booe boon boop boor boot bope bopp bor- bore born boro borr bort botb bote botn boto bott bpoe bpot breb bree bren breo brep brer bret brno brob broe bron broo bror brot brrr btbp bten btob btor btrt bttb ebbo ebbr eben eber ebno eboe ebon eboo ebor ebpo ebro eeee eent eero eete enb- enbn enbr enee eneo ener enne eno- enoe enon enp- ent- ente ento entp entr eone eont eore eoto epee epen eper epon epor epot eppo eppp eprb epro eprp epte erbb erbe ereb eren erer eret erne erno erob eroe eron eroo erpe erre erro etbr etee eten eter etne etnr etoe eton etre etro ette ettn etto nbbo nber nbpp nebb nebe nebn nebo nebr neeb neen neep neer neet nene neno nent neo- neon neoo neot nepe nepr nept nere nero nerr nert net- netb nete neto nett nnnn nnot nnpr nntn nobo noer non- none nonn nono nont noo- noob noon nooo noop noor noot nope nor- norb nore norn noro norr nort not- note noto nott nprt npte nptn nren nron nrpn nter ntop ntto nttr o-eo obbo oben ober obet oboe obon obor obot obre obro oen- oeno oere one- oneb onee oneo onep oner onne onno onon onor onpt ont- onto oobe ooer oone oont oooo oore oort ootb ootp open opep oper opet opo- opon opor oppo optn opto orbb orbe orbo ore- oreb oren oreo orer orne orno oro- oroe oron oror orot orpe orro orte orto otee oten otep oter oto- otoe oton otoo otor otpp otre otro otte otto peen peep peer peet pen- pene penn peno pent peon peor pepe pepo per- pere pern pero perp perr pert pete petn peto petr pett pnet pnon pnot pnpo pnpp pnro pntr pobo poer poet pone pono ponp pont poon poop poor poot pop- pope popo popp popt porb pore porn poro porr port pote poto pott ppen pper pppn pppo pppp pptn pptt pre- preb pree pren prep pret prnp pro- prob proe pron proo prop prot prtp prtr pten pter ptop rbbb rbbr rebb rebe rebo reeb reen reep reet rene renn reno rent reop reot repe repo repp repr rept rere rero rert rete reto retr rett rnbr rnnt rnot rntp rob- robb robe robo robt roen roer roet rone rono ront roob roon roop roor root rope ropo rore roro rort rote rotn roto rotr rott rpet rpob rpoe rpon rppn rptn rrrr rtee rttp tbrb tbtp tebo teen teer teet tenb tene tenn teno tenp tent teon teor tepe tepp ter- tere tern tero terp terr tete teto tetr tett tneb tobe tobo tobt toee toen toer toet tonb tone tonn tono toon toor toot top- tope topo topp topt tore torn toro torp torr tort tote toto totr tott tper tpon tppp tppr tpte tptp tptr tre- tree tren treo tret trno troe tron troo trop trot trpe trpn trpp trte trtr ttbb tten tteo tter ttoe tton ttop tttt

-tree bbbee be-er be-ro beber bebop bebot beebe beene beete bene- benet benne benno benon benot bento beone beorn beote bepen bepop beppe beppo berbe beren beret berne berno bernt berob beroe beror berre berte berto betee beten beter betne beton betoo betor betre bett- bette betto bo-bo bobet bobr bobre boero boner bonet bonne bonon bonte booer boone boont boore boorn boort bopet borbo boree boren borer boret born- borne borno bornt boro- boron boroo borot borre borro boten botet botne boton botro botte bpeen breen breer breet