dddd ddpo ddre dedd dede dedo dedu deed deef deep deer defe deff defo deop deor depe depo depp depr der- dere derf dero derp derr deue deur dfer dfoe dfrf dod- dodd dode dodo doer doff dood doof doop door dope dopo dopp dopr dord dore dorf doro dorp dorr doru doud doue douf doup dour dper dred dree dref drod drof drop drou drue drup druu dudd dude dudo dudu duer duff dufu duo- dupe dupo dure duro duru duur edde eddo eddp ede- eder edfu edod edou edru edup edur eede eedu eeee eefe eero efeo efor eode eore epee eper epod epor eppo eppp epro eprp erde erdf ered erer erod eroe eroo erpe erre erro erur eude euer eur- eure euro fede feed feer fefe feff fefo feod feof ferd fere fero ferr feru feud ffee ffff ffrr fode foed foer fofo food foof fopp for- ford fore foro forr foud foup four fprf fred free freo frep froe frop frou frpd frue fudd fude fuff fufu fuor fur- fure furo furr o-eo oddd oded odeo oder odoo odop odor odou odrp odur oedo oere oeuf ofdr ofer off- offe offo offr offu ofor ofre ooer ooff oooo oord oore oped opep oper opo- opor oppo orde ordo ordu ore- ored oreo orer orfe orff orfu oro- oroe orof oror orpe orro orup oude oued ouer oufe ouff oupe our- oure ouro ouu- pdpr ped- pede pedf pedo peed peep peer peff peor peou pepd pepe pepo per- perd pere perf pero perp perr peru peur pfff pffr pod- podd pode podo podu poed poer poff pood poof poop poor pop- pope popo popp pore poro porr poud pouf poup pour pper ppod pppd pppo pppp pprf ppru ppur pre- pred pree pref prep preu pro- prod proe prof proo prop prou prpd prrd prud prue pruf pruu pu-e pudo pudu pued pueo puer pueu puff pupe pupu pur- pure puro purp purr puru rder redd rede redo redr redu reed reef reep refd refe reff refr refu reod reof reop reou repe repo repp repr repu rerd rere rero reru reue reuf reup reuu rfef rodd rode rodo roed roer rofe roff rofo rood roof roop roor rope ropo rore roro roru roud roue rouf roup rpdp rpoe rpof rred rrrr rudd rude rudo rudp rued ruer rufe ruff rufo rupe rupp rurd rure ruro rurp ruru ruud u-rp uder udoo udop udpd ufer uffe uofo uor- uore updf updo uped upor uppe uppp uppu upup urde urdu ure- ured urfe urff uro- uroo urpo urre urup urur uuuu