eeee eeke eete ekek eker eket ekpe epee eper eppp eprp epte erer eret erke erpe erre etee eter etre ette keek keep keer keet keke kep- kepe kept ker- kere kerk kerp kerr kert ket- kete ketk ketp ketr kett kkkk kkpk kkpt kkre kkrk kkrr kkrt kktk kpek kper kpet kpke kpkk kpkr kppk kppp kppr kpre kprk kprp kprr kprt kpte kptr kptt kree krek kret krke krkk krkr krpr krpt krre krrk krrr krrt krtk krtr ktee ktek ktep ktke ktkk ktkr ktkt ktpk ktpr ktpt ktre ktrk ktrp ktrr ktrt kttk kttp kttr kttt peek peep peer peet peke pekk pepe per- pere perk perp perr pert pete petr pett pper pppp pptt pre- pree prek prep pret prtp prtr pter pttk reek reep reet reke rekt repe repp repr rept rere rert rete retr rett rpet rrrr rtee rttp teek teer teet teke tepe tepp ter- tere terk terp terr tete tetr tett tper tpke tppp tppr tpte tptp tptr tre- tree trek tret trpe trpp trte trtr tter tttt