a-do a-fu aaaa aaad aaaf aaap aaar aada aadu aafa aafd aaff aaoo aapa aapo aara aard aaro aarp aaru aaup adaa adad adao adap adar adda addd addo addr addu adfa adod adoo ador adp- adra adro adua adur afaa afad afao afap afar affa affo afoa afoo afor afpa afr- afra afro afru afua afud aopo aora aouf apao apap apar apda apdd apdu apfa apfo apo- apod apof apoo apop apor apou appa appd appr appu apra apro apua apud apup arad araf arap arar arau arda ardf ardo ardu arfa arff arfu aroa arod aroo aror arpa arpu arr- arra arro arrr arru arua arud arup auaa audo aur- aura aurd auro daad daap daar daau dada dado dadu dafa daff dafo daou dapa dapp dapu dara dard darf daro darp darr daru daud daur dddd ddpo dfaf dffa dfrf doap doar dod- doda dodd dodo doff dood doof doop door dopa dopo dopp dopr dora dord dorf doro dorp dorr doru doud douf doup dour dpaa dppa draa drad draf drap drar drau drda drod drof drop drou drra drua drup druu duaa duad duar duda dudd dudo dudu duff dufu duo- dupa dupo dura duro duru duur faaa faad faap fada fadd fado fafa faff fafo fapa fapp fara fard faro farp farr faru faud faur fdoa ffar ffff ffrr foad foaf foar foda fofo food foof fopp for- fora ford foro forr foua foud foup four fpaa fpda fpra fprf frad frap frau frop frou frpd fuad fuar fuda fudd fuff fufu fuor fur- fura furo furr oaau oafo oara odda oddd odoo odop odor odou odra odrp odur ofdr off- offa offo offr offu ofor ofra ooaa ooda ooff oooo oora oord opap opar opo- opor oppa oppo opra opua orad orao orar orda ordo ordu orff orfu oro- orof oror orra orro orup ouad ouff oupa our- oura ouro ouu- paap paar pada padd pado padu pafa paff papa papp papr par- para pard parf paro parp parr paru paua paud paup paur pdaf pdfa pdpa pdpr pfaa pfff pffr pfra poad poar pod- poda podd podo podu poff pood poof poop poor pop- popa popo popp pora poro porr poud pouf poup pour ppad ppap ppar ppfa ppoa ppod pppa pppd pppo pppp pprf ppru ppur prad prao prar prau pro- proa prod prof proo prop prou prpd prrd prud pruf pruu puao puar pudo pudu puff pupa pupu pur- pura puro purp purr puru raad raaf rada radd rado radr radu rafa raff raop rapa rapd rapp rara rarf raro raua raud rauf raup rdap rdfa road roaf roap roar roda rodd rodo roff rofo rood roof roop roor ropa ropo rora roro roru roua roud rouf roup rpdp rpof rrad rrrr ruad ruda rudd rudo rudp rufa ruff rufo rupa rupp rura rurd ruro rurp ruru ruud u-rp uafa uaru uaua udaa udad udar udau udoo udop udpd udra uffa ufra uofa uofo uor- upar upda updf updo upor uppa uppp uppu upra upup urad urao urap urau urda urdu urfa urff uro- uroa uroo urpo urra urup urur uuuu