-ana aaaa aaab aaac aaam aaan aaba aabb aabc aabm aaca aacb aacc aacm aacn aama aamb aamc aamn aana abaa abab abac abam aban abb- abba abbb abca abcb abcc abcn abma abmb abmc acaa acab acac acan acba acca accc accm acma acmc amaa amac amam aman amb- amba ambn amca amcc amm- amma ana- anaa anab anac anam anan anba anbb anca ancc anma anna annb baaa baam baan baba babb babm bac- baca bacc bacn bama bamb bamc bamm bamn bana banc bann bbbb bbcm bcaa bcam bcbc bcca bccc bccm bcma bmaa bman caaa caab caac caam caan caba cac- caca cacc cacm cama camb camc camm cana canc cann cbac cbbc cbca cbcc cbcm cbcn cbna ccaa ccab ccac ccam ccba ccbc ccbn ccca cccb cccc cccm ccma ccmb ccmc ccmm ccna ccnb ccnc ccnm cmaa cmac cmba cmbc cmcc cmmb cmmc cmmn cnaa cnac cnam cnbc cnbm cnma cnna maaa maac maam maan maba mac- maca macb macc mama mamc man- mana manc mann mbac mbam mbba mbca mbna mcaa mcac mcan mcba mcbc mcca mccc mcmc mmaa mmab mmac mman mmcc mmcm mmmc mmmm mnaa mnac mnam mnba mnbb naaa naab naac naam naan naba nabc naca nacc nacm nama namb namm nan- nana nanb nann nbaa nbbc nbca nbcc ncaa ncac ncba ncbc ncca nccc nccn ncmm ncna ncnc nman nmmc nnmc nnnn