dddd ddpo ddre dedd dede dedo deed deep deer deop deor depe depo depp depr der- dere dero derp derr dex- dexe do-x dod- dodd dode dodo doer dood doop door dope dopo dopp dopr dord dore doro dorp dorr dper dppx dred dree drod drop dxdr dxed dxep dxrd dxre dxrp dxrr dxrx dxxr dxxx edde eddo eddp ede- eder edex edod eede eeee eero eode eore epee eper epod epor epox eppo eppp epro eprp epxp er-x erde ered erer erod eroe eroo erpe erre erro exed exer exo- exod exor expo expr exrx o-eo oddd oded odeo oder odex odoo odop odor odrp oedo oere ooer oooo oord oore oped opep oper opex opo- opor oppo orde ordo ore- ored oreo orer orex oro- oroe oror orpe orro oxep oxer oxo- oxox oxxo pdpr ped- pede pedo peed peep peer peor pepd pepe pepo per- perd pere pero perp perr pod- podd pode podo poed poer pood poop poor pop- pope popo popp pore poro porr pper ppod pppd pppo pppp pre- pred pree prep prex pro- prod proe proo prop prox prpd prrd rder redd rede redo redr redx reed reep reod reop repe repo repp repr rerd rere rero rexx rodd rode rodo roed roer rood roop roor roox rope ropo rore roro roxo rpdp rpoe rred rrrr x-ed xeer xer- xero xexe xoro xorp xoxo xper xrep xrod xxxo xxxx