a-do a-fu aaaa aaad aaaf aaal aaar aada aadu aafa aafd aaff aafl aala aald aall aalo aalu aaoo aara aard aaro aaru adaa adad adal adao adar adda addd addl addo addr addu adfa adfl adod adoo ador adra adro adua adur afaa afad afao afar afdl affa affo afla afoa afol afoo afor afr- afra afro afru afua afud alaa alad alal alao alar alau ald- alda aldl aldo alfa all- alla alll allo allr allu aloa alod alof alol aloo alor alou alro alua aluf alur aola aora aouf aoul arad araf aral arar arau arda ardf ardl ardo ardu arfa arff arfu arla arlo aroa arod aroo aror arr- arra arro arrr arru arua arud arul auaa audo aul- aula auld aulf aull aulo aulu auol aur- aura aurd auro daad daal daar daau dada dado dadu dafa daff dafo dala dalf dall dalo dalu daou dara dard darf darl daro darr daru daud daur dddd dfaf dffa dfrf doal doar dod- doda dodd dodo doff dola dold dolf doll dolo dolu dood doof dool door dora dord dorf doro dorr doru doud douf doul dour draa drad draf drar drau drda drod drof drol drou drra drua druu duaa duad dual duar duda dudd dudo dudu duff dufu dula dull dulo dulu duo- dura duro duru duul duur faaa faad fada fadd fado fafa faff fafo fala fald fall falo falu fara fard farl faro farr faru faud faul faur fdlr fdoa ffar ffff ffrr flad flao fldr flod floo flor flou flud fluf fluo flur foad foaf foal foar foda fofo fola fold foll folo folr food foof fool for- fora ford forl foro forr foua foud foul four frad frau frla frol frou fuad fuar fuda fudd fuff fufu fula full fulu fuor fur- fura furl furo furr laaa laad laal laar lada ladd lado ladu laff lala lald lall lalo lalu laou lara lard larf larr laru laud lauf laul laur lfrd llao llll lloa llod lloo llud load loaf loar loda lofa loff lola lold loll lolo lood loof lool loor lora lord loro loud loul lour louu lral lrdd lrrr luau luda ludd ludo luff lufu lula lull lulu lura lurd luua oaau oafo oall oara odal odda oddd odla odoo odor odou odra odrl odur ofdr off- offa offo offr offu ofla ofor ofra olaf olar olfa olla ollo olof olor olur ooaa ooda ooff oola oold oolo oooo oora oord orad oral orao orar orda ordo ordu orff orfu orla orlo orlu oro- orof oror orra orro ouad ouff oula ould oulu our- oura ouro ouu- raad raaf rada radd radl rado radr radu rafa raff rala ralf rall ralo raol rara rarf raro raua raud rauf raul rdfa rffl rlua road roaf roar roda rodd rodo roff rofl rofo rola rold rolf roll rolo rood roof rool roor rora roro roru roua roud rouf roul rrad rrrr ruad ruda rudd rudl rudo rufa ruff rufo rula rull rulo rura rurd ruro ruru ruud uafa uald uaru uaua udaa udad udal udar udau udoo udra uffa ufra ulaa ulad ular ulla ullo ullr ulo- ulua ulul uofa uofl uofo uor- urad ural urao urau urda urdu urfa urff urla uro- uroa urol uroo urra urur uulu uuuu