dddd ddre dedd dede deed deep deer deet depe depp depr dept der- dere derp derr dete detr dex- dexe dext dpdt dper dppx dred dree dret dtdp dted dttp dttx dtxt dxdr dxed dxep dxrd dxre dxrp dxrr dxrt dxrx dxxr dxxx edde eddp ede- eder edex eede eeee eete eext epee eper eppp eprp epte epxp er-x erde ered erer eret erpe erre etee eter etre ette exed exer expr expt exrx exte extr pdpr ped- pede peed peep peer peet pepd pepe per- perd pere perp perr pert pete petr pett pper pppd pppp pptt pre- pred pree prep pret prex prpd prrd prtp prtr pter ptpd ptrd rder redd rede redr redx reed reep reet repe repp repr rept rerd rere rert retd rete retr rett rexx rpdp rpet rptd rred rrrr rtdt rtee rtex rttp tedd tede tedx teed teer teet tepe tepp ter- tere terp terr tete tetr tett tetx text tped tper tppd tppp tppr tpte tptp tptr tre- tred tree tret trex trpe trpp trte trtr tter tttt txtr x-ed xeer xer- xert xexe xper xrep xtep xxxx