eeee eero eery eore epee eper epor eppo eppp eppy epro eprp erer eroe eroo erpe erre erro erur erye euer eur- eure euro eury eyer eyey eype eyre eyry eyup eyyr o-eo oere oeye oeyo ooer oooo oore oory opep oper opo- opor oppo oppy opry opye ore- oreo orer orey oro- oroe oror oroy orpe orro orry orup ouer oupe our- oure ouro ouu- ouyr oyee oyer oyeu oyou oyre peep peer peor peou pepe pepo per- pere pero perp perr peru pery peur peyo peyr poer poey poop poor pop- pope popo popp popy pore poro porr pory poup pour pouy poyo poyr pper pppo pppp ppru ppur ppye pre- pree prep preu prey pro- proe proo prop prou prue pruu pu-e pueo puer pueu puoy pupe pupu pupy pur- pure puro purp purr puru pury puy- puyo pyep pyo- pype pypy pyr- pyre pyro pyry reep reop reou repe repo repp repr repu repy rere rero reru rery reue reup reuu reye roer roey roop roor rope ropo ropy rore roro roru rory roue roup rouy roye rpoe rrrr ruer ruoy rupe rupp rupy rure ruro rurp ruru rype ryue u-rp uor- uore upor uppe uppp uppu uppy upup ure- urey uro- uroo urpo urre urry urup urur uuuu uyre ye-u yeep yeer yepe yepp yere yero yerr yery yeue yeye yeyo yeyr yoop yopo yopy yore yoro yory youe youp your yoye yoyo yuer yure yury yuye yuyu yyyy