aaaa aaab aaac aaal aaar aaas aaba aabb aabc aabl aaca aacb aacc aacl aacr aacs aala aalc aall aals aara aarc aars aasa aasc aass abaa abab abac abal abar abas abb- abba abbb abbr abbs abca abcb abcc abcl abcr abcs abla abls abra abrc abrs abs- absa absl abss acaa acab acac acar acas acba acbl acca accc accs acla aclc aclr acls acr- acra acrc acrr acrs acsa acsc acsl acss alaa alac alal alar alas alb- alba albc albs alca alcc alcs all- alla alll allr alls alsa alsc arab arac aral arar aras arba arbs arc- arca arcs arla arr- arra arrc arrr arrs ars- arsa arsc asaa asab asac asal asar asas asba asc- asca ascb ascc ascl ascr asla aslr asra asrc asrs assa assc assl assr asss baaa baal baar baas baba babb babr babs bac- baca bacc bacs bala balc ball bals bar- bara barb barc barr bars basa basc bass bbas bbbb bbbs bblb bbls bbrc bcaa bcar bcas bcbc bcbs bcca bccc bccl bccs bcra bcrs bcsa bcsc bcsl bcss blaa blab blac blas blls blrc blss brab brac bras brca brcb brls brrr brrs brsb brsr bsaa bsac bsas bscs bslc bsra bssc caaa caab caac caal caas caba cabs cac- caca cacc cacr cala calc call cals cara carb carc carl carr cars casa casb casc casl casr cass cbac cbal cbar cbbc cbbs cbca cbcc cbcl cbcr cbcs cblb cblc cbrl cbsa cbsc ccaa ccab ccac ccar ccas ccba ccbc ccca cccb cccc cccl cccs ccla cclc ccls ccra ccrc ccrl ccrs ccsa ccsl ccss clab clar clas clra clrs clsa clsc crab crac crar cras crbc crca crcc crcr crls crsa crss csaa csab csac csar csas cscb cscc cscl cscr cscs csla cslr csra csrc csrs cssa cssr laaa laac laal laar laas laba labr labs laca lacc lacl lacs lala lall lara larb larc larr lars lasa lass lbar lbcc lblr lbrs lbsc lcac lcbc lcca lccc lccs lcls lcra lcrl lcrs lcsc lcsr llbs llcc llcs lllc llll lrac lral lrba lrcs lrrc lrrr ls-r lscb lscs lsla lsrc lssa lssr raab raas raba rabb rabl rabs rac- raca racc racs rala ralb rall rara rarb rars rasa rasc rasl rass rbbb rbbr rbbs rbcl rbsl rbss rcac rcas rcbc rccb rccc rccs rcls rcsa rcsc rcsl rcss rlab rlcs rlls rras rrrr rsaa rscc rscs rslc rssa rssl sa-c saab saac saal saar saas saba sabb sabc sabr sabs saca sacc sacr sacs sala salc sall sals sara sarc sarl sarr sars sasa sasc sasl sass sbaa sbac sbar sbas sbbs sbca sbcc sbcs sbsa scaa scab scac scal scar scas scba sccc sccl sccs scl- sclc scls scr- scra scrc scrs scsa scsc scsl scsr slaa slab slac slas slcc slrc slrs slsa slsc sras srbc srcc ssaa ssab ssac ssas ssbr ssca sscc sscs ssla sslc ssra ssrc ssrl ssrs sssa sssb sssc ssss