-ana aaaa aaab aaac aaal aaan aaas aaba aabb aabc aabl aaca aacb aacc aacl aacn aacs aala aalc aall aals aana aasa aasc aass abaa abab abac abal aban abas abb- abba abbb abbs abca abcb abcc abcl abcn abcs abla abls abs- absa absl abss acaa acab acac acan acas acba acbl acca accc accs acla aclc acls acsa acsc acsl acss alaa alac alal alan alas alb- alba albc albs alca alcc alcs all- alla alll alln alls alna alsa alsc alsn ana- anaa anab anac anal anan anas anba anbb anbl anca ancc anla anlc anln anna annb anns ansa asaa asab asac asal asan asas asba asc- asca ascb ascc ascl asla asnc asnl assa assc assl assn asss baaa baal baan baas baba babb babs bac- baca bacc bacn bacs bala balc ball bals bana banc bann bans basa basc bass bbas bbbb bbbs bblb bbls bcaa bcas bcbc bcbs bcca bccc bccl bccs bcsa bcsc bcsl bcsn bcss blaa blab blac blan blas blls blss bnas bnss bsaa bsac bsas bscs bslc bsns bssc caaa caab caac caal caan caas caba cabs cac- caca cacc cala calc call cals cana canc cann cans casa casb casc casl cass cbac cbal cbbc cbbs cbca cbcc cbcl cbcn cbcs cblb cblc cbln cbna cbsa cbsc cbsn ccaa ccab ccac ccas ccba ccbc ccbn ccca cccb cccc cccl cccs ccla cclc ccls ccna ccnb ccnc ccns ccsa ccsl ccsn ccss clab clan clas clsa clsc cnaa cnac cnas cnbc cnbl cnna cnsa cnsl cnss csaa csab csac csas cscb cscc cscl cscs csla cssa laaa laac laal laan laas laba labs laca lacc lacl lacs lala lall lan- lana lanc lann lans lasa lass lbcc lbsc lcac lcbc lcca lccc lccs lcls lcsc llan llbs llcc llcs lllc llll lscb lscs lsla lssa naaa naab naac naal naan naas naba nabc nabl nabs naca nacc nacl nacs nala nalc nall nals nan- nana nanb nann nans nas- nasa nasb nasc nasl nass nbaa nbas nbbc nbca nbcc nbcs ncaa ncac ncba ncbc ncbs ncca nccc nccn nccs nclc ncln ncna ncnc ncsa ncsc ncsl ncss nlab nlcc nlcs nlls nlsc nnls nnnn nnsa nnsl nnss nsaa nsac nsca nscc nscl nscs nsla nsls nsna nssa nssb nssc nsss sa-c saab saac saal saan saas saba sabb sabc sabs saca sacc sacn sacs sala salc sall sals sana sann sans sasa sasc sasl sass sbaa sbac sbas sbbs sbca sbcc sbcs sbsa scaa scab scac scal scan scas scba sccc sccl sccs scl- sclc scls scna scsa scsc scsl scsn slaa slab slac slan slas slcc slln slsa slsc snab snas snba snca sncc snla snns ssaa ssab ssac ssan ssas ssbn ssca sscc sscs ssla sslc ssns sssa sssb sssc ssss