-er eee eeo eep eer eo- eoe eoo eop eor ep- epe epo epp epr ere ero erp err oee oeo oep oer oo- ooo oop oor op- ope opo opp opr or- ore oro orp orr p-p pee peo pep per poe poo pop por ppe ppo ppp ppr pre pro prp prr re- ree reo rep rer roe roo rop ror rpe rpo rpp rpr rrp rrr

eeee eero eore epee eper epor eppo eppp epro eprp erer eroe eroo erpe erre erro o-eo oere ooer oooo oore opep oper opo- opor oppo ore- oreo orer oro- oroe oror orro peep peer peor pepe pepo per- pere pero perp perr poer poop poor pop- pope popo popp pore poro porr pper pppo pppp pre- pree prep pro- proe proo prop reep reop repe repo repp repr rere rero roer roop roor rope ropo rore roro rpoe rrrr

e-pro eeeee eepee eorre erere eroor erore error oeppo oo-er ooooo opepe opere opper oreo- orere orero oroer p-rep peere pepee peppe perer perre perro po-po pooer poope poopo poore poper popop poppe poppo porer poro- porro preop proer proor prop- prope propp propr prore reepe reere repop repor reppe repro rere- reree ro-ro roero rooer roope roore roper roppe rorer rprop

epopee oooooo peepee peeper peerer pepero pepper perere peroor perore perper perree pooper poopoo poorer popopo poporo popper poppop pppppp pre-op preore proper propre reeper repope repper roeper roopee rooper

eeeroer orepeer pee-pee perrero perrore poo-poo porpere porpore prepere prepper propero propper

peeppeep pepperer perrerer poorpoor poroporo properer

poee-poee