-er eee eef eek eer ef- efe eff efr eke ekf ekr ere erf erk err fee fef fek fer ffe fff ffk ffr fkf fkk fre frf frk frr ke- kee kef kek ker kff kke kkk kkr krf krk krr re- ree ref rek rer rfe rff rfk rfr rke rkf rkk rrf rrk rrr

eeee eefe eeke efke ekek eker erer erke erre f--k feek feer fefe feff feke fere ferk ferr ffee ffff ffrr free keef keek keer keff kefr keke ker- kere kerk kerr kfer kfff kffk kfre kfrr kkfr kkkk kkre kkrf kkrk kkrr kree kref krek krfe krff krke krkk krkr krre krrf krrk krrr reef reek refe reff refr reke rere rfef rkkf rrrr

eeeee efere effer ekker erere feere ferr- ferre freek freer freke frere keefe keere kefee kerek kerre kreef kreek kreke reefe reere refer reffe rekke rere- reree

effere ferfer ferrer frefre keefer keeffe keeker kerker kreker reefer reeffe reeker refeff

ferrere kee-kee kreeker referee referer rerefer

referree referrer

keek-keek