a-a a-b a-c aaa aab aac aas ab- aba abb abc abs ac- aca acb acc acs as- asa asb asc ass baa bab bac bas bba bbb bbc bbs bca bcb bcc bcs bsa bsb bsc bss c-- caa cab cac cas cba cbb cbc cbs cca ccb ccc ccs csa csb csc css saa sab sac sas sba sbb sbc sbs sca scb scc scs ss- ssa ssb ssc sss

aaaa aaab aaac aaas aaba aabb aabc aaca aacb aacc aacs aasa aasc aass abaa abab abac abas abb- abba abbb abbs abca abcb abcc abcs abs- absa abss acaa acab acac acas acba acca accc accs acsa acsc acss asaa asab asac asas asba asc- asca ascb ascc assa assc asss baaa baas baba babb babs bac- baca bacc bacs basa basc bass bbas bbbb bbbs bcaa bcas bcbc bcbs bcca bccc bccs bcsa bcsc bcss bsaa bsac bsas bscs bssc caaa caab caac caas caba cabs cac- caca cacc casa casb casc cass cbac cbbc cbbs cbca cbcc cbcs cbsc ccaa ccab ccac ccas ccba ccbc ccca cccb cccc cccs ccsa ccss csaa csab csac csas cscb cscc cscs cssa sa-c saab saac saas saba sabb sabc sabs saca sacc sacs sasa sasc sass sbaa sbac sbas sbbs sbca sbcc sbcs sbsa scaa scab scac scas scba sccc sccs scsa scsc ssaa ssab ssac ssas ssca sscc sscs sssa sssb sssc ssss

-aaa- aaaas aaasa aaass aabaa aabba aacbc aacsa aacsb aacss abaab ababa ababs abaca abacs abasa abass abbac abbas abcas abccc acaca acacb acass accas asaba asabc asasa asbca assab assac assas b-cas babas babbs bacab bacas bacca basab basca bassa bsaba c-a-c ca-ca caaba cabas cacas casas casca ccass ccccc csaba saaba saabs saasa sabac sabas sabca sabsa sacas sacc- sacca sacsa sasca sassa scabs sccbc scsaa sscac sssss

aaaaba ababsa abacab abacas abassa abbasa abbass abscss acasa baabaa bacaba bassac bbbbbb cabasa casaba casbaa cascas cassab sabbac sabbas sacaba sacasa sacsac sascab sass-c ssabsa

bac-cab bbbbbbb casabas cassaba sssssss

bbbbbbbb cassabas

baabaabaa

casabababa

aaaaaaaaaaaaaaa bbbbbbbbbbbbbbb ccccccccccccccc