a-ha aaaa aaab aaah aaal aaar aaba aabb aabh aabl aaha aahl aala aall aalo aaoo aara aaro abaa abab abal abar abb- abba abbb abbo abbr abha abho abhr abla ablo aboa abob aboh abol aboo abor abra abro ahab ahah ahal ahar ahha ahla ahoa ahor ahra ahrr alaa alal alao alar alb- alba albo alha all- alla allh alll allo allr aloa aloh alol aloo alor alro aoah aoba aola aora aorb arab arah aral arar arba arbh arh- arla arlo aroa arob aroo aror arr- arra arrh arro arrr baaa baah baal baar baba babb babo babr baha bahl baho bahr bala ball balo baoh baol bar- bara barb barh baro barr bbbb bblb bhao bhar bhor bhra blaa blab blah blob bloo boab boal boar boba bobb bobo boha bohl boho bohr bola boll bolo boob booh bool boor bor- bora borh boro borr brab brah brao broa brob broh brol broo bror brrr haab haal haar haba habo haha haho hal- hala halb hall halo haor hara harh harl haro harr hbar hhaa hhhh hhla hlah hoar hoba hobo hoha hohl hoho hol- hola holb holh holl holo hool hoor hora horl horo horr hrbl hrob laaa laal laar laba labo labr laha laho lahr lala lall lalo lara larb larr lbar lblr lhhh lhor llao llll lloa lloo loar lob- loba lobb lobh lobo loha loho lohr lola loll lolo loob lool loor lora loro lral lrba lrrr oall oara obal obba obbo obla obol obor obra obrh obro ohal ohba ohho ohob ohoh ohra olah olar olba olbo olla ollo olor ooaa ooba ooha ooho oola oolo oooh oooo oora orab orah oral orao orar orba orbb orbo orla orlo oro- oror orra orro raab raba rabb rabl rabo raha rahl rahr rala ralb rall ralo raob raoh raol rara rarb raro rbbb rbbr rboh rhoa rhob rhoh rlab roab roar rob- roba robb robo roha rohl rohr rola roll rolo roob rool roor rora roro rrah rrrr