-er eee eek eep eer eev eke ekp ekr ekv ep- epe epp epr ere erk erp err erv eve evp evr evv ke- kee kek kep ker kev kke kkk kkp kkr kkv kpe kpk kpp kpr kpv krk krp krr krv kvk kvp kvr kvv p-p pee pek pep per pev pke pkp pkr ppe ppk ppp ppr ppv pre prk prp prr prv pve pvk pvp pvr pvv re- ree rek rep rer rev rke rkk rkp rkv rpe rpk rpp rpr rpv rrk rrp rrr rve rvp rvr rvv v-e vee vek vep ver vkp vpe vpk vpp vpr vre vrk vrp vrr vvr vvv

eeee eeke ekek eker ekpe epee eper eppp eprp erer erev erke erpe erre erve ever evre evvk keek keep keer keke kep- kepe ker- kere kerk kerp kerr kerv keve kkkk kkpk kkre kkrk kkrr kkrv kkvr kkvv kpek kper kpke kpkk kpkr kppk kppp kppr kppv kpre kprk kprp kprr kprv kpvr kree krek krev krke krkk krkr krkv krpr krre krrk krrr krve krvk krvr krvv kver kvre kvrp kvrr kvrv kvvp kvvr kvvv peek peep peer peev peke pekk pepe per- pere perk perp perr perv pper pppp pre- pree prek prep prev reek reep reev reke repe repp repr rere reve revp rrrr rver veep veer veke vepe vepr ver- vere verk veve vver vvvv

eeeee eepee eevee eever ekker erere ereve evere everr eveve k-p-r keepe keere keeve keppe kerek kerep kerre kerve kever kpeve kreek kreep kreke krepe p-rep peeke peere peeve pekre pepee peppe perer perke perre perve pevek pre-k preke preve reepe reere reeve rekke reppe rere- reree revep rever veere veeve vekke vekre veper verek verke verre verve vever

keeker keeper keever kepper kerker kerver kreker peeker peepee peeper peerer peevee peever pepper perere perper perree pppppp preeve reeker reeper reever repper revere revver veeker veepee veerer verree verrer verver vvvvvv

kee-kee kreeker pee-pee peperek prepere prepper repreve reveree reverer vereker verkerk verveer

peeppeep pepperer perperek perrerer repreeve

keek-keek repreever