a-a a-b a-c aaa aab aac aaf aak aas aax ab- aba abb abc abf abk abs abx ac- aca acb acc acf ack acs acx af- afa afb afc aff afk afs afx aka akb akc akk aks as- asa asb asc asf ask ass asx ax- axa axk axs axx baa bab bac baf bak bas bax bba bbb bbc bbf bbk bbs bbx bca bcb bcc bcf bck bcs bcx bfa bfb bfc bff bfs bfx bka bkb bkc bkf bkk bks bkx bsa bsb bsc bsf bsk bss bsx bxb bxx c-- caa cab cac caf cak cas cax cba cbb cbc cbf cbk cbs cbx cca ccb ccc ccf cck ccs ccx cfa cfb cfc cff cfk cfs cfx cka ckb ckc cks ckx csa csb csc csf csk css csx cxc cxf cxk cxs cxx faa fab fac faf fak fas fax fba fbb fbc fbf fbk fbs fbx fca fcb fcc fcf fck fcs fcx ffa ffc fff ffk ffs ffx fka fkb fkc fkf fkk fsa fsb fsc fsf fsk fss fsx fxs fxx ka- kaa kab kac kaf kak kas kax kba kbb kbc kbf kbk kbs kbx kca kcb kcc kck kcs kcx kfa kfc kff kfs kfx kkb kkc kkk kks ksa ksb ksc ksf ksk kss saa sab sac saf sak sas sax sba sbb sbc sbf sbk sbs sbx sca scb scc scf sck scs scx sfa sfb sfc sff sfk sfs sfx sk- ska skb skc skf skk sks skx ss- ssa ssb ssc ssf ssk sss ssx sxc sxs xaa xac xaf xak xas xbc xbx xcb xcf xcx xfa xfs xfx xkb xks xsa xsb xsc xss xxx

a-ak aaaa aaab aaac aaaf aaas aaba aabb aabc aaca aacb aacc aacf aack aacs aafa aafb aafc aaff aaka aasa aasc aasf aass abaa abab abac abaf abak abas abax abb- abba abbb abbs abca abcb abcc abcf abcs abff abs- absa absf abss acaa acab acac acas acba acca accc accf accs acfc acfs acks acsa acsc acss afaa afak afbs afca afcb afcc afcs affa affc affs afka afsa afsb afsc akaa akas akca akka aksa asaa asab asac asaf asak asas asba asc- asca ascb ascc ascx asfa aska asks assa assc assk asss axaf axfs ba-x baaa baaf baak baas baba babb babs bac- baca bacc back bacs bafc baff bak- baka baks basa basc basf bask bass bbas bbbb bbbs bbfc bcaa bcas bcbc bcbs bcca bccc bccs bcfc bcsa bcsc bcss bfas bfca bfcs bffs bsaa bsac bsas bscs bsfa bsfc bsff bsfs bssc caaa caab caac caaf caas caba cabf cabs cac- caca cacc cack cafa cafb cafc caff cafs caka casa casb casc cask cass caxa cbac cbax cbbc cbbs cbca cbcc cbcs cbfb cbfc cbka cbsa cbsc cbxa ccaa ccab ccac ccaf ccas ccba ccbc ccca cccb cccc cccf cccs ccfa ccfc ccff ccsa ccsf ccss cfaa cfab cfac cfax cfbc cfbs cfca cfcb cfcf cfcs cffb cfsa cfsx ckac ckbc ckbx ckck ckcs ckcx cksa cksb csaa csab csac csak csas csbf cscb cscc cscf cscs csfc cska csks cssa cxfs cxxx f--k faaa faac faas faba fabs faca facc fack facs fafa fafc faff fasa fasc fass fcab fcas fcba fcbs fcca fccf fcsc ffcc ffff ffsa ffss fkab fsas fscb fscc fsck fssa fssc fssf kaaa kaab kaaf kaak kaas kaba kabb kabc kabf kacb kacc kacs kafa kafc kaff kafs kaka kakc kakk kaks kakx kas- kasa kasb kasc kasf kask kass kasx kaxa kbaa kbab kbac kbak kbas kbba kbbb kbbc kbbf kbbk kbbs kbca kbcb kbck kbcs kbfb kbfc kbff kbfk kbfs kbfx kbkb kbkf kbkk kbsa kbsb kbsk kbss kbsx kbxb kbxs kbxx kc-x kcaa kcab kcac kcas kcba kcbc kcbf kcbk kcbs kcbx kcca kccb kccc kcck kcfa kcfb kcfc kcfx kckc kckf kckk kckx kcsa kcsb kcsc kcsf kcss kfab kfac kfax kfbc kfbk kfbx kfcf kfcs kffa kffb kfff kffk kffx kfka kfkb kfkx kfsa kfsk kfxa kfxf kfxs kfxx kkaa kkac kkba kkbb kkbs kkcb kkck kkcs kkfs kkkk kksa kksf kkss kkxa kkxk kkxs kkxx ksab ksac ksaf ksak ksas ksba ksbc ksbs ksca kscb ksck kscs ksfa ksfb ksfc ksfx kska kskb kskf kskk ksks kskx kssa ksss kssx kxaa kxac kxas kxba kxbx kxca kxcs kxfc kxff kxkc kxkk kxks kxkx kxsb kxsc kxss kxxf kxxk kxxx sa-c sa-x saab saac saaf saak saas saba sabb sabc sabs saca sacc sack sacs safa safb safc saff saka sakb sakk saks sasa sasc sasf sask sass saxa sbaa sbac sbas sbbs sbca sbcc sbcs sbfc sbsa scaa scab scac scaf scak scas scba sccc sccs scfa scfc sck- scsa scsc sfas sfax sfba sfbc sfca sfcc sfcs sffc sfss skab skac skaf skfc skss ssaa ssab ssac ssas ssca sscc sscs ssfc sssa sssb sssc sssf ssss xcas xxxx

-aaa- aaaas aaasa aaass aabaa aabba aabfs aacbc aacsa aacsb aacss abaab ababa ababs abaca aback abacs abaka abasa abask abass abbac abbas abcas abccc abfab abffs acaca acacb acack acass accas acfas akaba akasa akbas akkas asaak asaba asabc asack asafa asaka asasa asbak asbca asfak askaf askas asksa assab assac assaf assas asxas b-cas babak babas babax babbs babka babsk bacab bacas bacax bacca back- backa backf backs baffa baffs bakka baksa basab basak basca baska basks bassa bsaba bxkbf c-a-c ca-ca caaba cabas cacak cacas cacks caffa caffs casas casca casks ccass ccccc csaba fabas facks faffs fafsa fc-sb fcaca fscks kaaba kaaks kabaa kabab kabak kabas kabba kabsa kafak kaffa kafka kakas kakka kasab kasak kasba kaska kassa kaxas saaba saabs saaff saasa sabac sabak sabas sabca sabsa sacas sacc- sacca sacks sacsa safak saffa sakac sakka saksa sasak sasca saska sassa sback scabs scafa scaff sccbc scsaa sfaka skaff ssafa sscac sssss x-fab

aaaaba aasax ababsa abacab abacas abacks abakas abassa abbasa abbass abscss acasa ackack afassa akaska akassa akbaba akkaba assaka baabaa babkas bacaba bassac bbbbbb caback cabasa