d-ix dddd ddie ddre dedd dede dedi deed deep deer deid deie deip deir depe depp depr der- dere deri derp derr dex- dexe dide didi died diep dier diex diii dipe dipp dird dire dirr dixi dper dpie dppx dred dree drei drie drip drix dxdr dxed dxep dxii dxip dxix dxrd dxre dxrp dxrr dxrx dxxr dxxx edde eddi eddp ede- edei eder edex edie edip eede eeee eid- eide eidi eidr eied eiei eier eipr eird eire epee eper epi- epid epie epip epix eppp eprp epxp er-x erde erdi ered erei erer erie erpe erre exed exer exid expr exrx ided idee ider idex idid idie idir idre iedr ieie iere ieri iide iied iiie iiii ipdi iper ipex ipid ipie ipix ippr ipri ipxe irdp ired iree irer irex iri- irid irie irip irix irpe irre irri ixxi pdpr ped- pede pedi peed peep peer peip peir pepd pepe pepi per- perd pere peri perp perr pide pidx pied piep pier piip pipe pipi pipp pire piri pirr pixx pper ppid ppie pppd pppp pre- pred pree prep prex pri- prid prie prii prix prpd prrd prri rder redd rede redi redr redx reed reep reid reii reir repe repi repp repr rerd rere reri rexx ridd ride ridi ridx ried riep rier riex ripd ripe ripi ripp ripr rire riri rixe rpdp rpii rpix rred rrrr x-ed xeer xer- xexe xidi xiii xipe xixi xper xrep xxii xxix xxxi xxxx