-ana a-un aaaa aaab aaan aaar aaba aabb aana aara aaru abaa abab aban abar abau abb- abba abbb abbr abnu abra abua abun ana- anaa anab anan anar anau anba anbb anbu anna annb anua anub anun arab aran arar arau arba arna arr- arra arrr arru arua arub arun auaa auna aur- aura baaa baan baar baba babb babr babu bana bann banr banu bar- bara barb barn barr baru bau- baur bbau bbbb bnrr brab bran brau brna brrr brun buar buba bubb bubu buna bunb bunn bunu bur- bura burb burn burr buru naaa naab naan naar naba nabu nan- nana nanb nann nanu nara narn narr naru naur nbaa nbar nnnn nrab nrna nuan nuba nuna nunn nura nurn nurr nuru raab raan raba rabb rabu rana rann rara rarb raua raub raun rbbb rbbr rnbr rrna rrrr rrun ruan ruba rubb rubu runa runn rura ruru ruun uaru uaua ubar ubba ubra unaa unan unar unau unna unra uran urau urba urna urra urun urur uuuu