aaaa aaab aaac aaal aaap aaas aaba aabb aabc aabl aabp aaca aacb aacc aacl aacp aacs aala aalc aall aals aapa aapc aapl aaps aasa aasc aass abaa abab abac abal abap abas abb- abba abbb abbs abca abcb abcc abcl abcp abcs abla abls abpa abpc abpp abps abs- absa absl absp abss acaa acab acac acap acas acba acbl acca accc accp accs acla aclc acls acpa acps acsa acsc acsl acss al-p alaa alac alal alap alas alb- alba albc albs alca alcc alcs all- alla alll alls alpa alpl alps alsa alsc apac apal apap apas apba apbs apca apcb apcc apcs apl- apla aplp apls appa appc appl apps apsa apsl apss asaa asab asac asal asap asas asba asc- asca ascb ascc ascl ascp asla aspa aspc aspl asps assa assc assl assp asss baaa baal baas baba babb babs bac- baca bacc bacs bala balc ball bals bapa bapc bapp baps basa basc bass bbas bbbb bbbs bblb bbls bcaa bcap bcas bcbc bcbp bcbs bcca bccc bccl bccs bcpl bcpp bcps bcsa bcsc bcsl bcss blaa blab blac blas blls blsp blss bpcp bpsa bsaa bsac bsap bsas bscp bscs bslc bspp bssc caaa caab caac caal caap caas caba cabs cac- caca cacc cala calc call calp cals capa capb capc capp caps casa casb casc casl casp cass cbac cbal cbbc cbbs cbca cbcc cbcl cbcp cbcs cblb cblc cbpc cbpp cbsa cbsc ccaa ccab ccac ccap ccas ccba ccbc ccca cccb cccc cccl cccp cccs ccla cclc ccls ccpa ccpl ccpp ccps ccsa ccsl ccsp ccss clab clap clas clpb clpp clsa clsc cpaa cpac cpap cpas cpbc cpca cpcs cplc cpls cppa cpps cpsa cpsc cpsl csaa csab csac csas cscb cscc cscl cscs csla cslp cspa cspb cspc csps cssa laaa laac laal laap laas laba labs laca lacc lacl lacp lacs lala lall lapa lapb lapc lapp laps lasa lass lbcc lbsc lcac lcbc lcca lccc lccs lcls lcpa lcpc lcpl lcps lcsc lcsp llbs llcc llcs lllc llll llps lpac lpla lppl lpsc lpss lsap lscb lscs lsla lspl lssa lssp paal paap paas paba paca pacs pala pall palp pals papa papb papp paps pasa pasc pasl pasp pass pbac pbcc pbpa pbsa pbsp pcaa pcap pcas pcba pcbc pcbs pcca pccc pccl pccs pcll pcpb pcpp pcps pcsa plaa plab plac plap plas plcc plpa plpp plss ppac ppal ppap ppcc ppcs pppa pppp ppps ppss psac psap psas psca pspp psps pssa pssc sa-c saab saac saal saap saas saba sabb sabc sabs saca sacc sacs sala salc sall salp sals sapa sapp saps sasa sasc sasl sass sbaa sbac sbas sbbs sbca sbcc sbcs sbsa sbsp scaa scab scac scal scap scas scba sccc sccl sccp sccs scl- sclc scls scpa scpb scpl scps scsa scsc scsl slaa slab slac slap slas slbp slcc sllp slpp slps slsa slsc sp-a spac spal spap spas spca spcc spcs spla splc splp spls spps spsa spsp spss ssaa ssab ssac ssap ssas ssca sscc sscp sscs ssla sslc sslp sspa sspc sspl ssps sssa sssb sssc ssss