-ana aaaa aaab aaac aaan aaba aabb aabc aaca aacb aacc aacn aana aang abaa abab abac abag 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 ana- anaa anab anac anag anan anba anbb anca ancc ang- anga anna annb baaa baan baba babb bac- baca bacc bacn baga bagg bagn bana banc bang bann bbbb bbga bbng bcaa bcbc bcbg bcca bccc bgan bgca caaa caab caac caan caba cabg cac- caca cacc caga cagg cagn cana canc cang cann cbac cbbc cbca cbcc cbcn cbga cbgb cbna ccaa ccab ccac ccag ccba ccbc ccbn ccca cccb cccc ccga ccgc ccna ccnb ccnc cgac cgcc cgcg cnaa cnac cnag cnbc cnna gaba gabb gaga gagg gana ganc gang gann gbag gban gc-c gcaa gcbc gccc gcna gggg gnaa gnac gncc gngc naaa naab naac naag naan naba nabc naca nacc naga nagc nan- nana nanb nang nann nbaa nbbc nbca nbcc ncaa ncac ncba ncbc ncca nccc nccn ncga ncna ncnc ngab ngac ngan nngn nnnn