-ana a-ak aaaa aaab aaan aaar aaba aabb aaka aana aara abaa abab abak aban abar abb- abba abbb abbr abra akaa akan akar akka akna akr- akra ana- anaa anab anak anan anar anba anbb ank- anka anna annb arab arak aran arar arba arka arna arnk arr- arra arrk arrr baaa baak baan baar baba babb babr bak- baka bakr bana bank bann banr bar- bara barb bark barn barr bbbb bnrr brab brak bran brka brkb brna brrr kaaa kaab kaak kaan kaar kaba kabb kabr kaka kakk kakn kana kanb kann kara karb kark karn karr kbaa kbab kbak kbar kbba kbbb kbbk kbbr kbkb kbkk kbkr kbna kbnn kbnr kbra kbrb kbrk kbrn kkaa kkan kkar kkba kkbb kkbn kkbr kkkk kknb kknn kkrb kkrk kkrn kkrr knaa knab knan knar knba knbb knbn knbr knkk knnb knnk knnr knrb knrk krab krak kran krar krba krbb krbk krbr krka krkk krkn krkr krna krnb krnk krnn krrb krrk krrn krrr naaa naab naan naar naba nabk naka nan- nana nanb nann nara nark narn narr nbaa nbak nbar nnnn nrab nrna raab raak raan raba rabb rabk raka rakk rana rank rann rara rarb rark rbbb rbbr rnbr rrna rrrr