dddd ddpo ddre dedd dede dedo deed deef deep deer defe deff defo deop deor depe depo depp depr der- dere derf dero derp derr dfer dfoe dfrf dhed dhee dher dhod dhor dhpr dod- dodd dode dodo doer doff dohr dood doof doop door dope dopo dopp dopr dord dore dorf doro dorp dorr dper dphp dpph dred dree dref dreh drod drof droh drop edde eddo eddp ede- edeh eder edod eede eeee eefe eero efeo efor ehdd eheh eher ehre eode eore epee eper eph- epod epor eppo eppp epro eprp erde erdf ered erer erod eroe eroo erpe erre erro fede feed feer fefe feff fefo fehd fehr feod feof feoh ferd fere fero ferr ffee ffff ffrr fode foed foer fofo fohr food foof fopp for- ford fore foro forr fprf fred free freo frep froe froh frop frpd hdod hedd hede hedo hedp heed heef heep heer hefd hefe hehe heho heor hepe hepp herd here hero herp herr hhhh hhof hode hodh hodr hoed hoer hofe hoff hohe hoho hood hooe hoof hoop hoor hope hopf hopo hopp hord hore horo horr hpdh hppe hree hrod hrpp o-eo oddd oded odeo oder odoh odoo odop odor odrp oedo oere ofdr ofer off- offe offh offo offr ofor ofre ohed ohee oher ohho ohoh ohre ooer ooff ooho oooh oooo oord oore oped opep oper opo- opor oppo orde ordo ore- ored oreh oreo orer orfe orff orhe oro- oroe orof oror orpe orph orro pdpr ped- pede pedf pedo peed peep peer peff pehe peho pehr peor pepd pepe pepo per- perd pere perf perh pero perp perr pfff pffr phe- phoh phoo phrr pod- podd pode podo poed poer poff pood poof pooh poop poor pop- pope popo popp pore poro porr pper ppod pppd pppo pppp pprf pre- pred pree pref prep pro- prod proe prof proo prop prpd prrd rder redd rede redh redo redr reed reef reep refd refe reff refr rehe reod reof reop repe repo repp repr rerd rere rero rfef rhee rheo rhod rhoh rodd rode rodo roed roer rofe roff rofo rohe rohr rood roof roop roor rope ropo rore roro rpdp rpho rpoe rpof rred rrrr