-ase a-be aaaa aaab aaac aaae aaaf aaal aaas aaba aabb aabc aabl aaca aacb aacc aace aacf aacl aacs aaea aaec aaes aafa aafb aafc aaff aafl aala aalc aale aall aals aasa aasc aase aasf aass abaa abab abac abae abaf abal abas abb- abba abbb abbe abbs abca abcb abcc abcf abcl abcs abec abee abel abes abff abla able abls abs- absa abse absf absl abss acaa acab acac acae acas acba acbl acca accc acce accf accs ace- acea acec acel aces acfc acfe acfl acfs acla aclc acle acls acsa acsc acse acsl acss aeac aeaf aeas aebs aecb aecl aela aelc aesc aess afaa afbs afca afcb afcc afcs afee afel afes affa affc affs afla aflc afle afsa afsb afsc alaa alac alae alal alas alb- alba albc albe albs alca alcc alce alcs alea alec alee alef ales alfa alfe alfs all- alla alle alll alls alsa alsc alse asaa asab asac asae asaf asal asas asba asc- asca ascb ascc asce ascl asea asec asee asel ases asfa asla asle assa assc asse assl asss baaa baaf baal baas baba babb babe babs bac- baca bacc bace bacs bael baes bafc baff bala balc bale balf ball bals basa basc base basf bass bbas bbbb bbbs bbeb bbfc bblb bbls bcaa bcas bcbc bcbs bcca bccc bccl bccs bcec bces bcfc bcsa bcsc bcsl bcss beaf beal beas beba bebb bebe beca becs beeb beef beel bees befa befe beff bela bele bell bels bes- besa bese bess bfas bfca bfcs bffl bffs blaa blab blac blae blas blea bleb blee bles blfc blls blss bsaa bsac bsas bscs bsea bseb bsec bsee bses bsfa bsfc bsff bsfs bslc bssc bsse caaa caab caac caaf caal caas caba cabe cabf cabs cac- caca cacc cace caec caes cafa cafb cafc cafe caff cafl cafs cala calc cale calf call cals casa casb casc case casl cass cbac cbal cbbc cbbs cbca cbcc cbce cbcl cbcs cbea cbec cbee cbef cbfb cbfc cblb cblc cbsa cbsc cbse ccaa ccab ccac ccaf ccas ccba ccbc ccca cccb cccc cccf cccl cccs ccee ccel ccfa ccfc ccff ccfl ccla cclc ccls ccsa ccsf ccsl ccss ceac ceal ceas ceba cebs cec- ceca cece cecs ceeb ceec ceel cees cef- cefa cefc cel- cela celc cele celf cell cels cesa cesc cese cess cfaa cfab cfac cfae cfbc cfbs cfca cfcb cfcf cfcl cfcs cffb cfls cfsa cfse cfsl clab claf clas clea clec clee clef cles clsa clsc csaa csab csac csas csbf cscb cscc csce cscf cscl cscs csea csec csee csfc csla cssa csse e-cl e-la eaaf eaba eaca eacc eaec eafb eala ealc eale easa ease ebac ebal ebba ebbc ebbs ebcc ebel ebes ebfc ebla ebsa ecaa ecac ecal ecbc ecbe ecca eccb eccc ecce eccl ecef eces ecfa ecfc ecfs ecla ecsa ecsc ecse ecss eeca eecs eeea eeee eees eefa eefe eefl eele eels eese efab efas efca efes effa effs efla efsa el-b elab elac elal elas elba elbe elca elcb elce elea elec elee elef eles elfa elfc elfe elfs ella elle ells elsa else esab esac esas esba esbs esca escb esce escs esea esee esel eses esfs esla essa esse essl faaa faac faas faba fabe fabs faca facc face facs faeb faes fafa fafc fafe faff fala falc fale fall fals fasa fasc fase fass fbla fble fcab fcal fcas fcba fcbs fcca fccf fces fcsc fcsl feaf feal feas feba febs fece feeb feel fees fefc fefe feff fela fele felf fell fels fesa fese fess ffcc ffee ffff ffsa ffss flab flac flae flcl flea flee fles fsas fscb fscc fsec fssa fssc fssf laaa laac laal laas laba labe labs laca lacc lace lacl lacs lael laes lafb lafc lafe laff lala lale lall lasa lase lass lbcc lbsc lcac lcbc lcca lccc lcce lccs lces lcfc lcls lcsc leaa leaf leal leas leba leca lece leea leef leel lees lefa lefe leff lela lele lell lesa lese less lfca lfcc llbs llcc llcs llef lles lllc llll lscb lscs lsea lses lsfc lsla lssa sa-c saab saac saae saaf saal saas saba sabb sabc sabe sabs saca sacc sace sacs saeb sael saes safa safb safc safe saff sala salc sale salf sall sals sasa sasc sase sasf sasl sass sbaa sbac sbas sbbs sbca sbcc sbcs sbef sbfc sbsa sbse scaa scab scac scaf scal scas scba sccc scce sccl sccs scea scec scee scel scfa scfc scfe scl- sclc scls scsa scsc scsl se-c se-e se-f se-s seaa seab seac seaf seal seas seba sebe sebs sec- seca secc sece secs seea seeb seec seef seel sees sefa seff sefl sela selb sele self sell sels sesa sesc sese sess sfas sfba sfbc sfca sfcc sfcs sffc sfla sflc sfls sfss slaa slab slac slae slaf slas slcc slea sleb slee sles slsa slsc ssaa ssab ssac ssas ssca sscc ssce sscs ssec ssee sses ssfc ssfl ssla sslc ssle sssa sssb sssc sssf ssss