-ana a-ha aaaa aaab aaac aaad aaah aaan aaba aabb aabc aabd aabh aaca aacb aacc aacd aach aacn aada aadc aaha aana aand abaa abab abac abad aban abb- abba abbb abca abcb abcc abcd abch abcn abda abha acaa acab acac acad acan acba acca accc accd acch acda acdb acdc acha achh adaa adab adac adad adah adan adba adbc adcc adda addc addd addn adha adhd adhn adna ahab ahac ahad ahah ahha ana- anaa anab anac anad anah anan anba anbb anca ancc and- anda andh anha anna annb baaa baad baah baan baba babb bac- baca bacc bach bacn bada badb badd badh baha bahn bana banc band banh bann bbad bbbb bbch bbdd bcaa bcbc bcca bccc bcda bchd bdbc bddc bddh bdna bhan bhca bhcc c-cd caaa caab caac caah caan caba cac- caca cacc cach cada cadc cadd caha cahn cana canc cand canh cann cbac cbbc cbca cbcc cbcn cbdb cbdc cbdn cbha cbna cbnd ccaa ccab ccac ccad ccba ccbc ccbn ccca cccb cccc ccdc ccdh ccdn ccha ccna ccnb ccnc cdaa cdac cdad cdba cdda cddb cdna cdnb cdnc chaa chab chac chad chah chan chca chch chha chnb chnc cnaa cnac cnbc cnda cndd cnna d-na daab daad daan daba dabb daca dada daha dahn dana dand dann dbcc dcbc dcca dccb dccc dcdb dddd dhaa dhad dhan dnaa dnab dnac dnad dnah dnan haab haad haan haba hada hadh haha hahn hana hanc hand hann hbcd hcbc hcca hccb hccc hcch hdca hdda hhaa hhhh hndd hnna naaa naab naac naad naan naba nabc naca nacc nacd nach nada nadc nadh naha nan- nana nanb nand nann nbaa nbad nbbc nbca nbcc nbhd ncaa ncac ncba ncbc ncca nccc nccn ncda ncdc ncdn ncha nchc nchd ncna ncnc ncnd ndaa ndcc nddb ndna nhcc nhnn nndb nnnn