dddd ddre dedd dede deed deep deer deet depe depp depr dept der- dere derp derr dete detr dpdt dper dred dree dret dtdp dted dttp edde eddp ede- eder eede eeee eete epee eper eppp eprp epte erde ered erer eret erpe erre etee eter etre ette 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 prpd prrd prtp prtr pter ptpd ptrd rder redd rede redr reed reep reet repe repp repr rept rerd rere rert retd rete retr rett rpdp rpet rptd rred rrrr rtdt rtee rttp tedd tede teed teer teet tepe tepp ter- tere terp terr tete tetr tett tped tper tppd tppp tppr tpte tptp tptr tre- tred tree tret trpe trpp trte trtr tter tttt