dddd ddre ddry dedd dede dedo dedu deed deef deer defe deff defo defy deor der- dere derf dero derr dery deue deur deye deyf deyo deyr dfer dfoe dfrf dod- dodd dode dodo dody doer doff dood doof door dord dore dorf doro dorr doru dory doud doue douf dour douy doye doyo dred dree dref drey drod drof drou droy drue druu dry- drye dryf dudd dude dudo dudu duer duey duff dufu dufy duo- dure duro duru dury duur duyr dydd dyde dyed dyer dyey dyf- dyo- dyoo dyor dyou dyr- dyre dyrf dyro dyru dyur dyyr edde eddo eddy ede- eder edfu edod edou edru edur eede eedu eeee eefe eero eery efeo effy efor eode eore erde erdf ered erer erod eroe eroo erre erro erur erye eude euer eur- eure euro eury eyed eyer eyey eyre eyry eyyr fdry fede feed feer fefe feff fefo feod feof ferd fere fero ferr feru fery feud feyr ffee ffff ffrr fode fody foed foer fofo food foof for- ford fore foro forr foud four fred free freo frey froe frou frue frye fudd fude fuff fufu fuor fur- fure furo furr fury fuyu fyeo fyfe fyrd fyre fyry o-eo oddd oddy oded odeo oder odoo odor odou odry odur odyr oedo oere oeuf oeye oeyo ofdr ofer off- offe offo offr offu offy ofor ofre ooer ooff oofy oooo oord oore oory orde ordo ordu ore- ored oreo orer orey orfe orff orfu oro- oroe orof oror oroy orro orry oude oued ouer oufe ouff our- oure ouro ouu- ouyr oyee oyer oyeu oyou oyre rder redd rede redo redr redu redy reed reef refd refe reff refr refu reod reof reou rerd rere rero reru rery reue reuf reuu reyd reye rfef rodd rode rodo rody roed roer roey rofe roff rofo rood roof roor rore roro roru rory roud roue rouf rouy royd roye rred rrrr rudd rude rudo rudy rued ruer rufe ruff rufo ruoy rurd rure ruro ruru ruud ruyd ryde rydy ryfe ryff ryue ryyf uder udoo ufer uffe uofo uor- uore urde urdu urdy ure- ured urey urfe urff uro- uroo urre urry urur uuuu uydo uyre ydee ydre ye-u yedd yede yedo yeed yeer yefe yeff yeof yerd yere yero yerr yery yeue yeye yeyo yeyr yfed yode yodo yoff yood yoof yord yore yoro yory youd youe youf your yoye yoyo yrof yude yudo yudu yued yuer yuff yufu yurd yure yury yuye yuyu yyfe yyff yyyy