eeee eefe eero eete eext efeo efet efor eft- eftp eore eoto epee eper epor epot epox eppo eppp epro eprp epte epxp er-x erer eret erft erfx eroe eroo erpe erre erro etee eter etfe etoe etox etre etro ette etto exer exfo exo- exor expo expr expt exrx exte extr feer feet fefe feff fefo feof fere fero ferr fert fete fetp fetr fett fext ffee ffff ffrr fftf foer fofo foof foot fopp for- fore foro forr fort fote foto fotp fott foxe foxx fprf free freo frep fret frex froe frop frot fter ftop ftpe o-eo oere ofer off- offe offo offr ofor ofre oftp ooer ooff oooo oore oort ootp opep oper opet opex opo- opor oppo opto ore- oreo orer orex orfe orff oro- oroe orof oror orot orpe orro orte orto otee otep oter otfp oto- otoe otof otoo otor otpp otre otro otte otto oxep oxer oxo- oxof oxox oxxo peep peer peet peff peor pepe pepo per- pere perf pero perp perr pert pete peto petr pett pfet pfff pffr pfft pfte poer poet poff poof poop poor poot pop- pope popo popp popt pore poro porr port pote potf poto pott pper pppo pppp pprf pptt pre- pree pref prep pret prex pro- proe prof proo prop prot prox prtp prtr pter ptop ptox ptrf reef reep reet refe reff refr reft reof reop reot repe repo repp repr rept rere rero rert rete reto retr rett rexx rfef roer roet rofe roff rofo roof roop roor root roox rope ropo rore roro rort rote roto rotr rott roxo rpet rpoe rpof rrrr rtee rtex rttp teef teer teet teff teft teor tepe tepp ter- tere terf tero terp terr tete teto tetr tett tetx text tfot tfox tfpt tftp toee toer toet toff tofo toft toof toor toot top- tope topf topo topp topt tore torf toro torp torr tort torx tote toto totr tott tox- toxo toxt tper tppp tppr tpte tptp tptr tre- tree tref treo tret trex trfr troe troo trop trot trox trpe trpp trte trtr tteo tter ttff ttoe ttop tttt txtr xeer xefe xer- xero xert xexe xfer xftp xoro xorp xote xoxo xper xpot xpto xrep xtep xtro xxxo xxxx