a-ha aaaa aaab aaac aaaf aaah aaal aaas aaba aabb aabc aabh aabl aaca aacb aacc aacf aach aacl aacs aafa aafb aafc aaff aafl aaha aahl aahs aala aalc aall aals aasa aasc aasf aass abaa abab abac abaf abal abas abb- abba abbb abbs abca abcb abcc abcf abch abcl abcs abff abha abhs abla abls abs- absa absf absl abss acaa acab acac acas acba acbl acca accc accf acch accs acfc acfl acfs acha achh achl achs acla aclc acls acsa acsc acsl acss afaa afbs afca afcb afcc afch afcs affa affc affs afhs afla aflc afsa afsb afsc ahab ahac ahah ahal ahas ahfa ahha ahhs ahla ahsa ahss alaa alac alal alas alb- alba albc albs alca alcc alcs alfa alfs alha alhs all- alla allh alll alls alsa alsc asaa asab asac asaf asah asal asas asba asc- asca ascb ascc asch ascl asfa asha ashs asla assa assc assh assl asss baaa baaf baah baal baas baba babb babs bac- baca bacc bach bacs bafc baff baha bahl bahs bala balc balf ball bals basa basc basf bash bass bbas bbbb bbbs bbch bbfc bbhs bblb bbls bcaa bcas bcbc bcbs bcca bccc bccl bccs bcfc bchs bcsa bcsc bcsl bcss bfas bfca bfcs bffl bffs bfhs bhca bhcc bhff bhhs bhsf blaa blab blac blah blas blfc blhs blls blss bsaa bsac bsas bscs bsfa bsfc bsff bsfs bshs bslc bssc caaa caab caac caaf caah caal caas caba cabf cabs cac- caca cacc cach cafa cafb cafc caff cafl cafs caha cahl cahs cala calc calf call cals casa casb casc cash casl cass cbac cbal cbbc cbbs cbca cbcc cbcl cbcs cbfb cbfc cbha cbhl cbhs cblb cblc cbsa cbsc ccaa ccab ccac ccaf ccas ccba ccbc ccca cccb cccc cccf cccl cccs ccfa ccfc ccff ccfl ccha cchl cchs ccla cclc ccls ccsa ccsf ccsl ccss cfaa cfab cfac cfbc cfbs cfca cfcb cfcf cfcl cfcs cffb cfhs cfls cfsa cfsl chaa chab chac chaf chah chal chas chca chch chcs chfa chfc chfs chha chhs chlc chsc chsh clab claf clas clhs clsa clsc csaa csab csac csas csbf cscb cscc cscf csch cscl cscs csfc cshl cshs csla cssa faaa faac faah faas faba fabs faca facc fach facs fafa fafc faff faha fahs fala falc fall fals fasa fasc fash fass fbhs fbla fcab fcal fcas fcba fcbs fcca fccf fcch fchs fcsc fcsl ffcc ffff ffhs ffsa ffss fhas fhfs fhhs fhlb fhss flab flac flcl flhs fsas fscb fscc fshb fshs fssa fssc fssf haab haaf haal haas haba habs hacs hafb haff hafs haha hahs hal- hala halb half hall hals hasa hasc hash hass hbbs hbfc hbhs hbss hcbc hcbs hcca hccb hccc hcch hccs hcfa hcfc hchs hcsa hcsc hcss hfba hfcs hfhs hfss hhaa hhcl hhhh hhhs hhla hlah hlas hlhs hlss hsac hsas hsbc hscc hsfc hsfs hshs hsls laaa laac laal laas laba labs laca lacc lach lacl lacs lafb lafc laff laha lahs lala lall lasa lash lass lbcc lbhs lbsc lcac lcbc lcca lccc lccs lcfc lchc lchs lcls lcsc lfca lfcc lfhs lhas lhbs lhhh lhhs lhsa lhss llbs llcc llcs llhs lllc llll lscb lscs lsfc lshs lsla lssa sa-c saab saac saaf saah saal saas saba sabb sabc sabs saca sacc sacs safa safb safc saff saha sahl sahs sala salc salf salh sall sals sasa sasc sasf sash sasl sass sbaa sbac sbas sbbs sbca sbcc sbcs sbfc sbhc sbhs sbsa scaa scab scac scaf scal scas scba sccc sccl sccs scfa scfc sch- scha schh schl schs scl- sclc scls scsa scsc scsh scsl sfas sfba sfbc sfca sfcc sfcs sffc sfha sfhs sfla sflc sfls sfss shab shac shah shal shas shbs shca shcc shha shhh shhs shl- shls shsc slaa slab slac slaf slas slcc slhs slsa slsc ssaa ssab ssac ssas ssca sscc sscs ssfc ssfl sshl sshs ssla sslc sssa sssb sssc sssf sssh ssss