-ana aaaa aaab aaac aaal aaan aaba aabb aabc aabl aaca aacb aacc aacl aacn aala aalc aall aana abaa abab abac abaj abal aban abb- abba abbb abca abcb abcc abcl abcn abla ablj acaa acab acac acan acba acbl acca accc acla aclc ajab ajac ajan ajba ajla ajna alaa alac alal alan alb- alba albc alca alcc all- alla alll alln alna ana- anaa anab anac anal anan anba anbb anbl anca ancc anja anla anlc anln anna annb baaa baal baan baba babb bac- baca bacc bacn baja bala balc ball bana banc banj bann bbbb bblb bcaa bcbc bcca bccc bccl bjcc blaa blab blac blaj blan caaa caab caac caal caan caba cac- caca cacc caja cala calc call cana canc cann cbac cbal cbbc cbca cbcc cbcl cbcn cblb cblc cbln cbna ccaa ccab ccac ccba ccbc ccbn ccca cccb cccc cccl ccla cclc ccna ccnb ccnc cjan cjbc cjca cjcb cjcj cjcl cjnb clab clan cnaa cnac cnbc cnbl cnna cnnj jaal jaan jaba jaca jacc jacl jaja jala jalc jana jann jbaa jcbc jccc jjcc jlab jnlc laaa laac laaj laal laan laba laca lacc lacl laja lala lall lan- lana lanc lann lbcc lcac lcbc lcca lccc ljan ljla llan llcc lllc llll naaa naab naac naal naan naba nabc nabl naca nacc nacl naja nala nalc nall nan- nana nanb nann nbaa nbbc nbbj nbca nbcc ncaa ncac ncba ncbc ncca nccc nccn nclc ncln ncna ncnc njaa njac nlab nlcc nnnn