-ana aaaa aaab aaal aaan aaar aaba aabb aabl aala aall aana aara abaa abab abal aban abar abb- abba abbb abbr abla abra alaa alal alan alar alb- alba all- alla alll alln allr alna ana- anaa anab anal anan anar anba anbb anbl anla anln anna annb arab aral aran arar arba arla arna arr- arra arrr baaa baal baan baar baba babb babr bala ball bana bann banr bar- bara barb barn barr bbbb bblb blaa blab blan bnrr brab bran brna brrr laaa laal laan laar laba labr lala lall lan- lana lann lara larb larn larr lbar lblr llan llll lral lrba lrrr naaa naab naal naan naar naba nabl nala nall nan- nana nanb nann nara narn narr nbaa nbar nlab nlra nlrb nnnn nrab nrlb nrna nrrl raab raan raba rabb rabl rala ralb rall rana rann rara rarb rbbb rbbr rlab rnal rnbr rrna rrrr