-ana a-un aaaa aaab aaan aaar aaba aabb aana aaon aaoo aara aaro aaru abaa abab aban abar abau abb- abba abbb abbo abbr abnu aboa abob abon aboo abor abou abra abro abua abun ana- anaa anab anan anao anar anau anba anbb anbo anbu anna annb anno ano- anoa anon anor anua anub anun aoba aonb aono aora aorb aorn aoun arab aran arar arau arba arna arno aroa arob aron aroo aror arr- arra arro arrr arru arua arub arun auaa auna aur- aura auro baaa baan baar baba babb babo babr babu bana bann bano banr banu baon bar- bara barb barn baro barr baru bau- baur bbau bbbb bnor bnrr boab boan boar boba bobb bobo bobu bona bonn bono bonu boob boon boor bor- bora born boro borr boru boua boun bour brab bran brao brau brna brno broa brob bron broo bror brou brrr brun buar buba bubb bubo bubu buna bunb bunn buno bunu buon bur- bura burb burn buro burr buru naaa naab naan naar naba nabo nabu nan- nana nanb nann nano nanu naor nara narn naro narr naru nauo naur nbaa nbar nbbo nnnn noaa noba nobo nobu non- nona nonn nono nonu noo- noob noon nooo noor nor- nora norb norn noro norr noun nour nrab nrna nron nuan nuba nuna nunn nuno nuon nura nurn nurr nuru oaau oara oban obba obbo obon obor obra obro onab onan onar onna onno onon onor onra onur ooaa ooba oona oooo oora orab oran orao orar orba orbb orbo orbu orna orno oro- oron oror orra orro orub ouan oun- ouna our- oura ourn ouro ouu- raab raan raba rabb rabo rabu rana rann rano raob rara rarb raro raua raub raun rbbb rbbr rnbr roab roan roar rob- roba robb robo robu rona rono roob roon roor rora roro roru roua roub roun rrna rrrr rrun ruan ruba rubb rubu runa runn runo rura ruro ruru ruun uaru uaua ubar ubba ubbo ubon ubra unaa unan unar unau unna unno unon unra unro uor- uran urao urau urba urna uro- uroa uroo urra urun urur uuno uuuu