a-do aaaa aaab aaad aaal aaar aaba aabb aabd aabl aada aadu aala aald aall aalo aalu aaoo aara aard aaro aaru abaa abab abad abal abar abau abb- abba abbb abbo abbr abda abdo abdu abla ablo aboa abob abod abol aboo abor abou abra abro abua abud abul adaa adab adad adal adao adar adba adda addd addl addo addr addu adob adod adoo ador adra adro adua adub adur alaa alad alal alao alar alau alb- alba albo albu ald- alda aldl aldo all- alla alll allo allr allu aloa alod alol aloo alor alou alro alua alur aoba aola aora aorb aoul arab arad aral arar arau arba arda ardl ardo ardu arla arlo aroa arob arod aroo aror arr- arra arro arrr arru arua arub arud arul auaa audo aul- aula auld aull aulo aulu auol aur- aura aurd auro baaa baad baal baar baba babb babo babr babu bada badb badd bado badr badu bala bald ball balo balu baol bar- bara barb bard baro barr baru bau- baud baul baur bbad bbau bbbb bbdd bbdo bblb bd-r blaa blab blad blau bldr blob blod bloo blou blub blud blur boab boad boal boar boba bobb bobo bobu boda bodb bodo bodu bola bold boll bolo bolu boob bood bool boor bor- bora bord boro borr boru boua boud boul bour brab brad brao brau brda brdo broa brob brod brol broo bror brou brrr brud buad bual buar buba bubb bubo bubu buda budb budd budl budo budu bula bulb buld bull bulu buol bur- bura burb burd burl buro burr buru d-bo daab daad daal daar daau daba dabb dabo dabu dada dado dadu dala dall dalo dalu daou dara darb dard darl daro darr daru daub daud daur dbar dddd ddub dlab dlbd doab doal doar doba dobb dobl dobu dod- doda dodd dodo dola dold doll dolo dolu doob dood dool door dora dord doro dorr doru doub doud doul dour draa drab drad drar drau drba drda drob drod drol drou drra drua drub druu duaa duab duad dual duar dub- duba dubb dubu duda dudd dudo dudu dula dull dulo dulu duo- dura duro duru duul duur laaa laad laal laar laba labo labr labu lada ladd lado ladu lala lald lall lalo lalu laou lara larb lard larr laru laub laud laul laur lbar lblr llao lldb llll lloa llod lloo llud load loar lob- loba lobb lobo loda lola lold loll lolo loob lood lool loor lora lord loro loud loul lour louu lral lrba lrdd lrrr luau luba luda ludd ludo lula lull lulu lura lurd luua oaau oall oara obad obal obba obbo obla oblu obol obor obra obro odal odbo odda oddd odla odoo odor odou odra odrl odur olar olba olbo oldb olla ollo olor olur ooaa ooba ooda oola oold oolo oooo oora oord orab orad oral orao orar orba orbb orbo orbu orda ordo ordu orla orlo orlu oro- oror orra orro orub ouad oula ould oulu our- oura ouro ouu- raab raad raba rabb rabl rabo rabu rada radd radl rado radr radu rala ralb rall ralo raob raol rara rarb raro raua raub raud raul rbbb rbbr rlab rlua roab road roar rob- roba robb robo robu roda rodd rodo rola rold roll rolo roob rood rool roor rora roro roru roua roub roud roul rrad rrrr ruad ruba rubb rubu ruda rudd rudl rudo rula rull rulo rura rurd ruro ruru ruud uald uaru uaua ubal ubar ubba ubbo ubla ublo ubod ubra ubud udaa udad udal udar udau udoo udra ulaa ulad ular ulla ullo ullr ulo- ulua ulul uor- urad ural urao urau urba urda urdu urla uro- uroa urol uroo urra urur uulu uuuu