-ene eeee eeke ekek eken eker ekne ekpe enee ener enke enkr enne enp- epee epen eper eppp eprp eren erer erke erne erpe erre keek keen keep keer keke ken- kene kenk kenn kenr kep- kepe kepn ker- kere kerk kern kerp kerr kken kkkk kkne kknn kkpk kkpn kkre kkrk kkrn kkrr knee knek knen knep knkk knnk knnr knpr knrk kpek kper kpke kpkk kpkr kpne kpnp kppk kppp kppr kpre kprk kprn kprp kprr kree krek kren krke krkk krkn krkr krne krnk krnn krnp krpr krre krrk krrn krrr neen neep neer neke nene nepe nepr nere nerk nerr nnnn nnpr nren nrpn peek peen peep peer peke pekk pen- pene penk penn pepe per- pere perk pern perp perr pnkp pnpp ppen pper pppn pppp pre- pree prek pren prep prnp reek reen reep reke rene renk renn repe repp repr rere rppn rrrr