dddd ddie ddre dedd dede dedi deed deep deer deid deie deip deir depe depp depr der- dere deri derp derr dide didi died diep dier diii dipe dipp dird dire dirr dper dpie dred dree drei drie drip edde eddi eddp ede- edei eder edie edip eede eeee eid- eide eidi eidr eied eiei eier eipr eird eire epee eper epi- epid epie epip eppp eprp erde erdi ered erei erer erie erpe erre ided idee ider idid idie idir idre iedr ieie iere ieri iide iied iiie iiii ipdi iper ipid ipie ippr ipri irdp ired iree irer iri- irid irie irip irpe irre irri pdpr ped- pede pedi peed peep peer peip peir pepd pepe pepi per- perd pere peri perp perr pide pied piep pier piip pipe pipi pipp pire piri pirr pper ppid ppie pppd pppp pre- pred pree prep pri- prid prie prii prpd prrd prri rder redd rede redi redr reed reep reid reii reir repe repi repp repr rerd rere reri ridd ride ridi ried riep rier ripd ripe ripi ripp ripr rire riri rpdp rpii rred rrrr