-ana aaaa aaab aaaf aaal aaan aaar aaba aabb aabl aafa aafb aaff aafl aala aall aalo aana aaon aaoo aara aaro abaa abab abaf abal aban abar abb- abba abbb abbo abbr abff abla ablo aboa abob abof abol abon aboo abor abra abro afaa afan afao afar affa affo afla afoa afol afoo afor afr- afra afro alaa alal alan alao alar alb- alba albo alfa all- alla alll alln allo allr alna aloa alof alol alon aloo alor alro ana- anaa anab anal anan anao anar anba anbb anbl anbo anfa anfo anla anln anlo anna annb anno ano- anoa anon anor aoba aola aonb aono aora aorb aorn arab araf aral aran arar arba arfa arfb arff arla arlo arna arno aroa arob aron aroo aror arr- arra arro arrr baaa baaf baal baan baar baba babb babo babr baff bafo bala balf ball balo bana bann bano banr baol baon bar- bara barb barf barn baro barr bbbb bbfn bblb bffl blaa blab blan blno blob blon bloo bnor bnrr boab boal boan boar boba bobb bobo bofa boff bola boll boln bolo bona bonn bono boob boof bool boon boor bor- bora borf born boro borr brab braf bran brao brna brno broa brob brol bron broo bror brrr faaa faan faba fabo fafa faff fafo fala fall faln falo fana fano faon fara farb farl faro farr fbar fbla ffar ffff ffrr flab flan flao flna flnb flob flon floo flor fnar foaf foal foan foar foba fofo fola foll folo folr fono foof fool foon for- fora forb forl forn foro forr frab fran frla frob frol fron laaa laal laan laar laba labo labr lafb laff lala lall lalo lan- lana lann lano laon lara larb larf larn larr lbar lblr llan llao llll lloa lloo loaf loan loar lob- loba lobb lobo lofa loff lofn lola loll lolo lona lono lonr loob loof lool loon loor lora lorn loro lral lrba lron lrrr naaa naab naal naan naar naba nabf nabl nabo nafa naff nafl nafo nala nall nan- nana nanb nann nano naor nara narf narn naro narr nbaa nbaf nbar nbbo nbfa nbfl nfaa nfff nfon nfra nlab nlra nlrb nnnn noaa noal noba nobo nola nolf noll nolo non- nona nonn nono noo- noob nool noon nooo noor nor- nora norb norf norn noro norr nrab nrlb nrna nron nrrl oafo oall oara obal oban obba obbo obla obol obon obor obra obro ofan off- offa offo offr ofla ofna ofno ofor ofra olaf olan olar olba olbo olfa olla ollo olof olon olor onab onal onan onar onla onlf onna onno onon onor onra ooaa ooba ooff oola oolo oona oooo oora orab oral oran orao orar orba orbb orbo orff orla orlo orna orno oro- orof oron oror orra orro raab raaf raan raba rabb rabl rabo rafa raff rala ralb ralf rall ralo rana rann rano raob raol rara rarb rarf raro rbaf rbbb rbbr rffl rlab rnaf rnal rnbr roab roaf roan roar rob- roba robb robo roff rofl rofo rola rolf roll rolo rona rono roob roof rool roon roor rora roro rrna rrrr