aaaa aaab aaac aaam aaas aaba aabb aabc aabm aaca aacb aacc aacm aacs aama aamb aamc aams aasa aasc aasm aass abaa abab abac abam abas abb- abba abbb abbs abca abcb abcc abcs abma abmb abmc abms abs- absa abss acaa acab acac acas acba acca accc accm accs acma acmc acms acsa acsc acsm acss amaa amac amam amas amb- amba ambs amca amcc amcs amm- amma amsa amsc amss asaa asab asac asam asas asba asbm asc- asca ascb ascc asma asmm asms assa assc asss baaa baam baas baba babb babm babs bac- baca bacc bacs bama bamb bamc bamm bams basa basc bass bbas bbbb bbbs bbcm bcaa bcam bcas bcbc bcbs bcca bccc bccm bccs bcma bcms bcsa bcsc bcsm bcss bmaa bsaa bsac bsam bsas bscs bsms bssc bssm caaa caab caac caam caas caba cabs cac- caca cacc cacm cama camb camc camm cams casa casb casc casm cass cbac cbbc cbbs cbca cbcc cbcm cbcs cbms cbsa cbsc cbsm ccaa ccab ccac ccam ccas ccba ccbc ccca cccb cccc cccm cccs ccma ccmb ccmc ccmm ccms ccsa ccss cmaa cmac cmas cmba cmbc cmbs cmcc cmcs cmmb cmmc cmms cmsa cmsc csaa csab csac csas csbm cscb cscc cscs csma csmc cssa cssm maaa maac maam maas maba mabs mac- maca macb macc macs mama mamc mams masa masc mass mbac mbam mbas mbba mbbs mbca mbcs mbms mcaa mcac mcas mcba mcbc mcca mccc mcmc mcsa mcss mmaa mmab mmac mmas mmcc mmcm mmcs mmmc mmmm mmms mmsc msaa msas msba msca mscc msma msmb msmc msmm msms mssa mssm sa-c saab saac saam saas saba sabb sabc sabs saca sacc sacs sam- sama samc samm sams sasa sasc sasm sass sbaa sbac sbas sbbs sbca sbcc sbcs sbma sbmc sbsa scaa scab scac scam scas scba sccc sccm sccs scma scmc scmm scms scsa scsc smaa smac smas smba smbc smcc smsc smss ssaa ssab ssac ssam ssas ssca sscc sscs ssmc sssa sssb sssc sssm ssss