e-pro eeeee eepee efere effer efore ekeko ekker eofor eorre erere erkko eroor erore error feeor feere fefor feoff ferr- ferre ferro fokke foore fore- foreo forro freek freep freer freke frere froop frore k-p-r k-pop keefe keepe keere kefee keppe kerek kerep kerre ko-ko koepp koker kokko kokor kokre kopek koper kopff koppe korek korff korke korop koror korpe korpo korro kre-o kreef kreek kreep kreke kreo- krepe kroke kropp o-fer oeppo offek offer offof offre ofpop okeke okere okker okoro oo-er ooooo opepe opere opper oreo- orere orero orfeo orfoe orfor oroer oroke p-rep peeke peere pefko pekoe pekre pepee peppe perer perke perko perre perro pforp po-po poker pooer pooke poope poopo poore poork popek poper popop poppe poppo porer porke poro- porro pre-k preef preff preke preko preok preop proer profe proff proke proof proor prop- prope propp propr prore reefe reepe reere refer reffe reffo rekke repok repop repor reppe repro rere- reree ro-ro roero roffe rofor rokee roker rokke rokkk rooer roofe rooke roope roore roper roppe rorer rorke rperf rprop