-ana a-ak aaaa aaab aaan aaar aaav aaba aabb aaka aana aara aava abaa abab abak aban abar abb- abba abbb abbr abra abva 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 arva arvn avab avan avar avra avva baaa baak baan baar baba babb babr bak- baka bakr bana bank bann banr bar- bara barb bark barn barr bava bbbb bnrr brab brak bran brav brka brkb brna brrr kaaa kaab kaak kaan kaar kaba kabb kabr kaka kakk kakn kana kanb kann kanv kara karb kark karn karr karv kava kavb kavv kbaa kbab kbak kbar kbba kbbb kbbk kbbr kbkb kbkk kbkr kbkv kbna kbnn kbnr kbnv kbra kbrb kbrk kbrn kbrv kbva kbvb kbvr kkaa kkan kkar kkba kkbb kkbn kkbr kkkk kknb kknn kkrb kkrk kkrn kkrr kkrv kkvr kkvv knaa knab knan knar knba knbb knbn knbr knkk knnb knnk knnr knrb knrk knrv knva knvn knvr krab krak kran krar krav krba krbb krbk krbr krka krkk krkn krkr krkv krna krnb krnk krnn krnv krrb krrk krrn krrr krva krvb krvk krvn krvr krvv kvab kvak kvan kvar kvbr kvna kvnn kvnr kvra kvrr kvrv kvvn kvvr kvvv naaa naab naan naar naba nabk naka nan- nana nanb nann nara nark narn narr nava navr navv nbaa nbak nbar nnnn nrab nrna raab raak raan raba rabb rabk raka rakk rana rank rann rara rarb rark rava rbbb rbbr rnbr rrna rrrr vaan vaar vaka vana vank vann vara vark varn varr vava vnav vrak vran vrav vrba vrnn vvvv