-vac aaaa aaab aaac aaal aaas aaav aaba aabb aabc aabl aaca aacb aacc aacl aacs aacv aala aalc aall aals aasa aasc aass aava abaa abab abac abal abas abb- abba abbb abbs abca abcb abcc abcl abcs abla abls ablv abs- absa absl abss abva acaa acab acac acas acba acbl acca accc accs acla aclc acls acsa acsc acsl acss acvs acvv alaa alac alal alas alb- alba albc albs alca alcc alcs all- alla alll alls alsa alsc alva asaa asab asac asal asas asba asc- asca ascb ascc ascl asla assa assc assl asss asva asvs avab aval avas avcc avlb avva baaa baal baas baba babb babs bac- baca bacc bacs bala balc ball bals basa basc bass bava bbas bbbb bbbs bblb bbls bcaa bcas bcbc bcbs bcca bccc bccl bccs bcsa bcsc bcsl bcss blaa blab blac blas blls blss bsaa bsac bsas bscs bslc bssc bvsc caaa caab caac caal caas caba cabs cac- caca cacc cala calc call cals casa casb casc casl cass cava cavs cbac cbal cbbc cbbs cbca cbcc cbcl cbcs cblb cblc cbsa cbsc cbva cbvb ccaa ccab ccac ccas ccba ccbc ccca cccb cccc cccl cccs cccv ccla cclc ccls cclv ccsa ccsl ccss ccvs clab clas clav clsa clsc csaa csab csac csas csav cscb cscc cscl cscs csla cssa cvac cvas cvbs cvca cvcc cvsl cvss laaa laac laal laas laba labs laca lacc lacl lacs lala lall lasa lass lava lavc lavs lbcc lbsc lcac lcbc lcca lccc lccs lcls lcsc llbs llcc llcs lllc llll lscb lscs lsla lssa lvcc lvsv sa-c saab saac saal saas saba sabb sabc sabs saca sacc sacs sala salc sall sals salv sasa sasc sasl sass sava savs sbaa sbac sbas sbbs sbca sbcc sbcs sbsa scaa scab scac scal scas scba sccc sccl sccs scl- sclc scls scsa scsc scsl slaa slab slac slas slav slcc slsa slsc ssaa ssab ssac ssas ssca sscc sscs ssla sslc sssa sssb sssc ssss svcc svcs svsc vaal vaas vabs vaca vacs vala vall vals vas- vasa vasl vass vava vavs vbcc vcal vlab vlas vlba vlcc vssc vssl vvsb vvvv