eeee eero eore epee eper epor eppo eppp epro eprp erer erew eroe eroo erpe erre erro erur euer eur- eure euro euwe ewer ewew ewre o-eo oere ooer oooo oore opep oper opo- opor oppo ore- oreo orer oro- oroe oror orpe orro orup orwe orwo ouer oupe our- oure ouro ouu- ouwe ower owoe owow owpe owre owur peep peer peor peou pepe pepo per- pere pero perp perr peru peur pewe poer poop poor pop- pope popo popp pore poro porr poup pour pouw powe powp powr pper pppo pppp ppru ppur pre- pree prep preu prew pro- proe proo prop prou prow prue pruu pu-e pueo puer pueu pupe pupu pur- pure puro purp purr puru puwe reep reop reou repe repo repp repr repu rere rero reru reue reup reuu rewe roer roop roor rope ropo rore roro roru roue roup rowe rowp rowr roww rpoe rrrr ruer rupe rupp rure ruro rurp ruru ruwe u-rp uewe uor- uore upor uppe uppp uppu upup ure- uro- uroo urpo urre urup urur uuuu uwer weeo weep weer weeu weop weow wepe wepp wepr wer- were wero werp werr werw weup wewe wewo woer woop woow wopp wore woro worp worr worw woup wour wouw wowe wowo wowp woww wpeo wpep wper wpop wpor wpow wppr wpre wpro wprp wprr wpup wpur wree wrer wrew wroo wrop wrow wrpp wrpr wrpw wrre wrro wrrw wrup wrwr wupe wupr wupw wur- wurp wuuu wuwe wweo wwer wwor wwow wwpr wwpw wwre wwrr wwru wwrw wwwe wwwr wwww