a-do a-fu aaaa aaad aaae aaaf aaar aada aade aadu aaea aafa aafd aaff aaoe aaoo aara aard aare aaro aaru adaa adad adae adao adar adda addd adde addo addr addu adea adee adeo ader adfa adod adoe adoo ador adra adre adro adua adue adur aeaf aede aeer aer- aera aerd aero afaa afad afao afar afee afer affa affo afoa afoe afoo afor afr- afra afre afro afru afua afud afue aoeu aora aouf arad arae araf arar arau arda arde ardf ardo ardu area ared aree aref areo areu arfa arff arfu aroa arod aroe aroo aror arr- arra arre arro arrr arru arua arud arue auaa aude audo auer aufe aur- aura aurd aure auro daad daae daar daau dada dade dado dadu daer daeu dafa dafe daff dafo daou dara dard dare darf daro darr daru daud daue daur dddd ddre dead deae deaf dear deau deda dedd dede dedo dedu deed deef deer defe deff defo deor der- dera dere derf dero derr deua deue deur dfaf dfer dffa dfoe dfrf doae doar dod- doda dodd dode dodo doea doer doff dood doof door dora dord dore dorf doro dorr doru doud doue douf dour draa drad draf drar drau drda drea dred dree dref drod drof drou drra drua drue druu duaa duad duar duda dudd dude dudo dudu duer duff dufu duo- dura dure duro duru duur eaaf eada eadd eara eard eare earo edad edar edda edde eddo ede- edea eder edfa edfu edod edou edra edru edur eede eedu eeea eeee eefa eefe eera eero efda efeo effa efor efua eode eora eore erad eraf erau erda erde erdf ered erer erod eroe eroo erra erre erro erua erur eude euer eur- eura eure euro faaa faad fada fadd fade fado fafa fafe faff fafo fara fard fare faro farr faru faud faue faur fdoa fead feaf fear feda fede feed feer fefe feff fefo feod feof fera ferd fere fero ferr feru feud ffar ffee ffff ffrr foad foaf foar foda fode foed foer fofo food foof for- fora ford fore foro forr foua foud four frad frae frau frea fred free freo froe frou frue fuad fuar fuda fudd fude fuff fufu fuor fur- fura fure furo furr o-eo oaau oade oaer oafo oara oare odda oddd odea oded odeo oder odoo odor odou odra odur oedo oera oere oeuf ofdr ofer off- offa offe offo offr offu ofor ofra ofre ooaa ooda ooer ooff oooo oora oord oore orad orae orao orar orda orde ordo ordu ore- orea ored oreo orer orfe orff orfu oro- oroe orof oror orra orro ouad oude ouea oued ouer oufe ouff our- oura oure ouro ouu- raad raaf rada radd rade rado radr radu raed raef raer rafa rafe raff rara rare rarf raro raua raud raue rauf rder rdfa rea- read reae reaf reao rear reau reda redd rede redo redr redu reed reef refd refe reff refr refu reod reof reou rera rerd rere rero reru reue reuf reuu rfae rfef road roaf roar roda rodd rode rodo roea roed roer rofe roff rofo rood roof roor rora rore roro roru roua roud roue rouf rrad rred rrrr ruad ruda rudd rude rudo rued ruer rufa rufe ruff rufo rura rurd rure ruro ruru ruud uafa uaru uaua udaa udad udar udau udea uder udoo udra ueda uefa ufer uffa uffe ufra uofa uofo uor- uore urad urao urau urda urde urdu ure- urea ured urfa urfe urff uro- uroa uroo urra urre urur uuuu