-er eee eeo eep eer eo- eoe eoo eop eoq eor ep- epe epo epp epq epr eqe eqp eqq ere ero erp erq err oee oeo oep oer oo- ooo oop oor op- ope opo opp opq opr oqo or- ore oro orp orr p-p pee peo pep per poe poo pop por ppe ppo ppp ppq ppr pqq pqr pre pro prp prq prr qee qeo qep qoo qop qor qpp qpr qqq qre qrp re- ree reo rep req rer roe roo rop ror rpe rpo rpp rpr rrp rrq 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 opqr ore- oreo orer oro- oroe oror orpe orro peep peer peor pepe pepo per- pere pero perp perq perr poer poop poor pop- pope popo popp pore poro porr pper pppo pppp pre- pree prep pro- proe proo prop qeep qere qero qerq qoop qore qqqq 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 qoroq 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 prereq proper propre qorqor 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