-ana a-ak aaaa aaab aaaf aaan aaar aaba aabb aafa aafb aaff aaka aana aara abaa abab abaf abak aban abar abb- abba abbb abbr abff abra afaa afak afan afar affa afka afkr afr- afra akaa akan akar akka akna akr- akra ana- anaa anab anak anan anar anba anbb anfa ank- anka anna annb arab araf arak aran arar arba arfa arfb arff arka arna arnk arr- arra arrk arrr baaa baaf baak baan baar baba babb babr baff bak- baka bakr bana bank bann banr bar- bara barb barf bark barn barr bbbb bbfn bnrr brab braf brak bran brka brkb brna brrr f--k faaa faan faba fafa faff fana fank fara farb fark farr fbar ffar ffff ffrr fkab fnar frab frak fran kaaa kaab kaaf kaak kaan kaar kaba kabb kabf kabr kafa kaff kafn kafr kaka kakk kakn kana kanb kanf kann kara karb karf kark karn karr kbaa kbab kbak kbar kbba kbbb kbbf kbbk kbbr kbfb kbff kbfk kbfr kbkb kbkf kbkk kbkr kbna kbnn kbnr kbra kbrb kbrf kbrk kbrn kfab kfan kfar kfbk kfbn kffa kffb kfff kffk kffn kfka kfkb kfna kfnf kfnk kfnn kfra kfrn kfrr kkaa kkan kkar kkba kkbb kkbn kkbr kkfn kkfr kkkk kknb kknn kkrb kkrf kkrk kkrn kkrr knaa knab knaf knan knar knba knbb knbn knbr knfa knfr knkk knnb knnk knnr knrb knrk krab krak kran krar krba krbb krbk krbr krff krfn krka krkk krkn krkr krna krnb krnk krnn krrb krrf krrk krrn krrr naaa naab naan naar naba nabf nabk nafa naff naka nan- nana nanb nann nara narf nark narn narr nbaa nbaf nbak nbar nbfa nfaa nfff nfra nkrf nnnn nrab nrna raab raaf raak raan raba rabb rabk rafa raff raka rakk rana rank rann rara rarb rarf rark rbaf rbbb rbbr rkkf rnaf rnbr rrna rrrr