-ana a-ak aaaa aaab aaan aaar aaba aabb aaka aana aara abaa abab abak aban abar abax abb- abba abbb abbr abra akaa akan akar akka akna akr- akra ana- anaa anab anak anan anar anax anba anbb ank- anka anna annb arab arak aran arar arax arba arka arna arnk arr- arra arrk arrr axan axar ba-x baaa baak baan baar baba babb babr bak- baka bakr bana bank bann banr bar- bara barb bark barn barr barx bbbb bnrr brab brak bran brax brka brkb brna brrr kaaa kaab kaak kaan kaar kaba kabb kabr kaka kakk kakn kakx kana kanb kann kanx kara karb kark karn karr karx kaxa kbaa kbab kbak kbar kbba kbbb kbbk kbbr kbkb kbkk kbkr kbna kbnn kbnr kbra kbrb kbrk kbrn kbrx kbxb kbxr kbxx kkaa kkan kkar kkba kkbb kkbn kkbr kkkk kknb kknn kknx kkrb kkrk kkrn kkrr kkrx kkxa kkxk kkxx knaa knab knan knar knax knba knbb knbn knbr knkk knnb knnk knnr knrb knrk knrx knxr knxx krab krak kran krar krba krbb krbk krbr krbx krka krkk krkn krkr krkx krna krnb krnk krnn krrb krrk krrn krrr krrx krxa krxb krxk krxr krxx kxaa kxar kxba kxbn kxbr kxbx kxkk kxkx kxna kxra kxrb kxrk kxrr kxrx kxxk kxxn kxxr kxxx naaa naab naan naar naba nabk naka nan- nana nanb nann nara nark narn narr narx nbaa nbak nbar nnnn nrab nrna raab raak raan raba rabb rabk raka rakk rana rank rann ranx rara rarb rark raxa rbbb rbbr rnbr rrna rrrr xaar xana xara xbar xbra xxxx