-ana aaaa aaab aaad aaan aaas aaba aabb aabd aada aads aana aand aasa aasd aass abaa abab abad aban abas abb- abba abbb abbs abda abs- absa absd abss adaa adab adad adan adas adba adda addd addn adds adna adns adsa adss ana- anaa anab anad anan anas anba anbb and- anda ands anna annb anns ansa ansd asaa asab asad asan asas asba asda asds assa assd assn asss baaa baad baan baas baba babb babs bada badb badd bads bana band bann bans basa bass bbad bbas bbbb bbbs bbdd bdna bdsd bnas bnss bsaa bsas bsbd bsnd bsns bssd d-na daab daad daan daas daba dabb dabs dada dads dana dand dann dans dasa dasb dasd dass dbas dbsa dbss dddd ddss dnaa dnab dnad dnan dnas dnsa dsba dsda dssa dssn naaa naab naad naan naas naba nabs nada nads nan- nana nanb nand nann nans nas- nasa nasb nasd nass nbaa nbad nbas ndaa ndas nddb ndna ndss nndb nnnn nnsa nnss nsaa nsds nsna nssa nssb nsss saab saad saan saas saba sabb sabs sada sadb sadd sads sana sand sann sans sasa sasd sass sbaa sbas sbbs sbds sbsa sbsd sdba sdds sdna sdss snab snad snas snba snda snns snsd ssaa ssab ssan ssas ssbn ssdd ssns sssa sssb ssss