-ana a-ak aaaa aaab aaac aaan aaba aabb aabc aaca aacb aacc aack aacn aaka aana aang abaa abab abac abag abak aban abb- abba abbb abca abcb abcc abcn acaa acab acac acag acan acba acca accc acga agac agag agan agba agca agcc agga agna akaa akan akca akka akna ana- anaa anab anac anag anak anan anba anbb anca ancc ang- anga ank- anka anna annb baaa baak baan baba babb bac- baca bacc back bacn baga bagg bagn bak- baka bana banc bang bank bann bbbb bbga bbng bcaa bcbc bcbg bcca bccc bgan bgca caaa caab caac caan caba cabg cac- caca cacc cack caga cagg cagn caka cana canc cang cank cann cbac cbbc cbca cbcc cbcn cbga cbgb cbka cbkg cbkn cbna ccaa ccab ccac ccag ccba ccbc ccbn ccca cccb cccc ccga ccgc ccna ccnb ccnc cgac cgcc cgcg ckac ckan ckbc ckck ckga ckgn cknb cknc cnaa cnac cnag cnbc cnna gaba gabb gack gaga gagg gana ganc gang gank gann gbag gban gc-c gcaa gcbc gccc gcna gggg gnaa gnac gncc gngc kaaa kaab kaag kaak kaan kaba kabb kabc kabg kacb kacc kag- kaga kagb kagc kagg kaka kakc kakk kakn kana kanb kang kann kbaa kbab kbac kbak kbba kbbb kbbc kbbg kbbk kbca kbcb kbck kbga kbgb kbgg kbgn kbkb kbkg kbkk kbna kbng kbnn kcaa kcab kcac kcba kcbc kcbk kcca kccb kccc kcck kcgc kckc kckk kckn kcnb kgab kgac kgak kgan kgba kgbb kgbc kgbn kgcb kgcc kgcn kgga kggg kgnb kgnc kgng kkaa kkac kkag kkan kkba kkbb kkbg kkbn kkcb kkck kkcn kkgb kkkk kknb kknn knaa knab knac knag knan knba knbb knbc knbn knca kncb knck kncn knga kngn knkk knnb knng knnk naaa naab naac naag naan naba nabc nabk naca nacc nack naga nagc nagk naka nan- nana nanb nang nann nbaa nbak nbbc nbca nbcc ncaa ncac ncba ncbc ncca nccc nccn ncga ncna ncnc ngab ngac ngan nkgb nngn nnnn