eeee eero eore epee eper epor epox eppo eppp epro eprp epxp er-x erer erew eroe eroo erpe erre erro ewer ewew ewre exer exo- exor expo expr exrx o-eo oere ooer oooo oore opep oper opex opo- opor oppo ore- oreo orer orex oro- oroe oror orpe orro orwe orwo ower owoe owow owpe owre oxep oxer oxo- oxox oxxo peep peer peor pepe pepo per- pere pero perp perr pewe poer poop poor pop- pope popo popp pore poro porr powe powp powr pper pppo pppp pre- pree prep prew prex pro- proe proo prop prow prox reep reop repe repo repp repr rere rero rewe rexx roer roop roor roox rope ropo rore roro rowe rowp rowr roww roxo rpoe rrrr weeo weep weer weex weop weow wepe wepp wepr wer- were wero werp werr werw wewe wewo wexe wexp wexr wexx woer woop woow wopp wore woro worp worr worw worx wowe wowo wowp woww woxe woxo woxr woxx wpeo wpep wper wpex wpop wpor wpow wppr wpre wpro wprp wprr wprx wpwx wpxr wree wrer wrew wrex wroo wrop wrow wrox wrpp wrpr wrpw wrre wrro wrrw wrrx wrwr wrxo wrxw wrxx wweo wwer wwor wwow wwox wwpr wwpw wwre wwrr wwrw wwrx wwwe wwwr wwww wwwx wxer wxew wxex wxow wxox wxpr wxro wxrr wxrx wxxx xeer xeew xer- xero xexe xoro xorp xoxo xper xrep xxxo xxxx