a-do aaaa aaab aaad aaal aaar aaba aabb aabd aabl aada aala aald aall aalo aaoo aara aard aaro abaa abab abad abal abar abb- abba abbb abbo abbr abda abdo abla ablo aboa abob abod abol aboo abor abra abro adaa adab adad adal adao adar adba adda addd addl addo addr adob adod adoo ador adra adro alaa alad alal alao alar alb- alba albo ald- alda aldl aldo all- alla alll allo allr aloa alod alol aloo alor alro aoba aola aora aorb arab arad aral arar arba arda ardl ardo arla arlo aroa arob arod aroo aror arr- arra arro arrr baaa baad baal baar baba babb babo babr bada badb badd bado badr bala bald ball balo baol bar- bara barb bard baro barr bbad bbbb bbdd bbdo bblb bd-r blaa blab blad bldr blob blod bloo boab boad boal boar boba bobb bobo boda bodb bodo bola bold boll bolo boob bood bool boor bor- bora bord boro borr brab brad brao brda brdo broa brob brod brol broo bror brrr d-bo daab daad daal daar daba dabb dabo dada dado dala dall dalo dara darb dard darl daro darr dbar dddd dlab dlbd doab doal doar doba dobb dobl dod- doda dodd dodo dola dold doll dolo doob dood dool door dora dord doro dorr draa drab drad drar drba drda drob drod drol drra laaa laad laal laar laba labo labr lada ladd lado lala lald lall lalo lara larb lard larr lbar lblr llao lldb llll lloa llod lloo load loar lob- loba lobb lobo loda lola lold loll lolo loob lood lool loor lora lord loro lral lrba lrdd lrrr oall oara obad obal obba obbo obla obol obor obra obro odal odbo odda oddd odla odoo odor odra odrl olar olba olbo oldb olla ollo olor ooaa ooba ooda oola oold oolo oooo oora oord orab orad oral orao orar orba orbb orbo orda ordo orla orlo oro- oror orra orro raab raad raba rabb rabl rabo rada radd radl rado radr rala ralb rall ralo raob raol rara rarb raro rbbb rbbr rlab roab road roar rob- roba robb robo roda rodd rodo rola rold roll rolo roob rood rool roor rora roro rrad rrrr