eeee eefe eeke eete efet efke eft- eftp ekek eker eket ekpe epee eper eppp eprp epte erer eret erft erke erpe erre etee eter etfe etre ette f--k feek feer feet fefe feff feke fere ferk ferr fert fete fetp fetr fett ffee ffff ffrr fftf fprf free frep fret fter ftpe keef keek keep keer keet keff kefr keft keke kep- kepe kept ker- kere kerf kerk kerp kerr kert ket- kete ketf ketk ketp ketr kett kfer kfff kffk kfpr kfpt kfre kfrp kfrr kfte kftk kftt kkfr kkft kkkk kkpk kkpt kkre kkrf kkrk kkrr kkrt kktk kpek kper kpet kpfk kpfr kpft kpke kpkk kpkr kppk kppp kppr kpre kprf kprk kprp kprr kprt kpte kptr kptt kree kref krek kret krfe krff krfp krft krke krkk krkr krpr krpt krre krrf krrk krrr krrt krtk krtr ktee ktek ktep ktke ktkk ktkr ktkt ktpk ktpr ktpt ktre ktrf ktrk ktrp ktrr ktrt kttf kttk kttp kttr kttt peek peep peer peet peff peke pekk pepe per- pere perf perk perp perr pert pete petr pett pfet pfff pffr pfft pfkp pfte pper pppp pprf pptt pre- pree pref prek prep pret prtp prtr pter ptrf pttk reef reek reep reet refe reff refr reft reke rekt repe repp repr rept rere rert rete retr rett rfef rkkf rpet rrrr rtee rttp teef teek teer teet teff teft teke tepe tepp ter- tere terf terk terp terr tete tetr tett tfpt tftp tper tpke tppp tppr tpte tptp tptr tre- tree tref trek tret trfr trpe trpp trte trtr tter ttff tttt