-ana a-ak aaaa aaab aaan aaar aaba aabb aaka aana aang aara abaa abab abag abak aban abar abb- abba abbb abbr abra agag agan agar agba agga agna agra akaa akan akar akka akna akr- akra ana- anaa anab anag anak anan anar anba anbb ang- anga ank- anka anna annb arab arag arak aran arar arba arga argb arka arna arng arnk arr- arra arrg arrk arrr baaa baak baan baar baba babb babr baga bagg bagn bak- baka bakr bana bang bank bann banr bar- bara barb barg bark barn barr bbbb bbga bbng bbrg bgan bnrr brab brag brak bran brka brkb brna brrr gaar gaba gabb gabr gaga gagg gana gang gank gann gara garb garg garn garr gbag gban gggg ggrn gnaa gnar gnrr grab gran grbr grrr kaaa kaab kaag kaak kaan kaar kaba kabb kabg kabr kag- kaga kagb kagg kagr kaka kakk kakn kana kanb kang kann kara karb karg kark karn karr kbaa kbab kbak kbar kbba kbbb kbbg kbbk kbbr kbga kbgb kbgg kbgn kbgr kbkb kbkg kbkk kbkr kbna kbng kbnn kbnr kbra kbrb kbrg kbrk kbrn kgab kgak kgan kgba kgbb kgbn kgbr kgga kggg kggr kgnb kgng kgnr kgra kgrb kgrg kgrk kgrn kgrr kkaa kkag kkan kkar kkba kkbb kkbg kkbn kkbr kkgb kkgr kkkk kknb kknn kkrb kkrk kkrn kkrr knaa knab knag knan knar knba knbb knbn knbr knga kngn kngr knkk knnb knng knnk knnr knrb knrg knrk krab krag krak kran krar krba krbb krbg krbk krbr krgn krka krkk krkn krkr krna krnb krng krnk krnn krrb krrg krrk krrn krrr naaa naab naag naan naar naba nabk naga nagk naka nan- nana nanb nang nann nara narg nark narn narr nbaa nbak nbar ngab ngan nkgb nngn nnnn nrab nrna raab raag raak raan raba rabb rabk raga ragg raka rakk rana rang rank rann rara rarb rark rbbb rbbr rgan rgba rnag rnbr rrna rrrr