a-ak aaaa aaab aaac aaal aaas aaba aabb aabc aabl aaca aacb aacc aack aacl aacs aacu aaka aaku aala aalc aall aals aalu aasa aasc aass aasu aaus abaa abab abac abak abal abas abau abb- abba abbb abbs abca abcb abcc abcl abcs abla abls abs- absa absl abss absu abua abuk abul abus acaa acab acac acas acba acbl acca accc accs accu acks acla aclc acls aclu acsa acsc acsl acss acu- acul acus akaa akal akas akca akka akku aksa aksu akua alaa alac alak alal alas alau alb- alba albc albs albu alca alcc alcs alk- alka alkb alku all- alla alll alls allu alsa alsc alua aluk alus asaa asab asac asak asal asas asau asba asbu asc- asca ascb ascc ascl aska asks asla assa assc assk assl asss assu asub asus auaa auca auks aul- aula aull auls aulu ausa ausu baaa baak baal baas baba babb babs babu bac- baca bacc back bacs bak- baka bakl baks baku bala balc balk ball bals balu basa basc bask bass basu bau- bauk baul bbas bbau bbbb bbbs bblb bbls bcaa bcas bcbc bcbs bcca bccc bccl bccs bcsa bcsc bcsl bcss bcuc blaa blab blac blak blas blau blcu blkb blls blss blub blus bsaa bsac bsas bscs bslc bssc bual buba bubb bubs bubu buca bucc buck bucs bucu buka bukk buku bula bulb bulk bull buls bulu busa busc busk buss busu buus caaa caab caac caal caas caba cabs cabu cac- caca cacc cack caka cala calc calk call cals calu casa casb casc cask casl cass casu cauc cauk caul caus cbac cbal cbbc cbbs cbca cbcc cbcl cbcs cbcu cbka cbkl cblb cblc cbsa cbsc cbus ccaa ccab ccac ccas ccba ccbc ccca cccb cccc cccl cccs cccu ccla cclc ccls ccsa ccsl ccss ccuc ccus ckac ckbc ckck ckcl ckcs cksa cksb cksl clab clas clau clsa clsc club csaa csab csac csak csas cscb cscc cscl cscs cska csks csla cslu cssa csua csus cuau cub- cuba cubb cubs cuca cucc cuck cuk- cuka cula culb culc culk cull culs cusa cusb cusk cuss cusu kaaa kaab kaak kaal kaas kaba kabb kabc kabu kacb kacc kacl kacs kacu kaka kakc kakk kaks kaku kala kalb kalc kalk kall kals kalu kas- kasa kasb kasc kask kasl kass kasu kau- kaub kauc kauk kaul kaus kbaa kbab kbac kbak kbal kbas kbba kbbb kbbc kbbk kbbl kbbs kbbu kbca kbcb kbck kbcl kbcs kbcu kbkb kbkk kbkl kbla kblb kbll kbls kblu kbsa kbsb kbsk kbss kbsu kbua kbub kbuc kbuk kbul kbus kbuu kcaa kcab kcac kcal kcas kcau kcba kcbc kcbk kcbl kcbs kcbu kcca kccb kccc kcck kccl kccu kckc kckk kckl kcla kclc kclk kcll kcls kclu kcsa kcsb kcsc kcss kcsu kcua kcub kcuk kcul kkaa kkac kkal kkba kkbb kkbl kkbs kkcb kkck kkcl kkcs kkkk kklb kklc kkll kkls kksa kkss kksu kkua kkus kkuu klaa klab klac klak klal klas klbb klbc klbl klbs klbu klca klcb klcc klck klcl klcs klka klkc klkk klkl klks klla kllb kllc kllk klls klsa klsc klsu klub kluk kluu ksab ksac ksak ksal ksas ksau ksba ksbc ksbl ksbs ksca kscb ksck kscl kscs kscu kska kskb kskk ksks ksku ksla kslb kslc kslk ksll kslu kssa kssl ksss kssu ksua ksub ksuu kuac kuau kuba kubb kubc kubs kubu kuca kucb kucc kuka kukk kukl kuks kuku kula kulb kull kulu kusa kusb kusc kusu kuub kuuk kuul kuuu laaa laac laak laal laas laba labs labu laca lacc lack lacl lacs lacu laka laks lala lall lalu lasa lask lass lasu laub lauk laul laus lbcc lbsc lcac lcbc lcca lccc lccs lcls lcsc lkab lkal llbs llcc llcs llks lllc llll lsbu lscb lscs lsla lssa luas luau luba lubs luca luck lucs luka lula lull lulu lusa lusk luss luua luuk sa-c saab saac saak saal saas saba sabb sabc sabs sabu saca sacc sack sacs sacu saka sakb sakk saks saku sala salc salk sall sals salu sasa sasc sask sasl sass saua sauc sauk saul saus sbaa sbac sbas sbbs sbca sbcc sbcs sbsa sbus scaa scab scac scak scal scas scba sccc sccl sccs sck- sckl scl- sclc sclk scls scsa scsc scsl scsu scua scub scul skab skac skal skss skua skul slaa slab slac slak slas slau slcc slcu slsa slsc slsu slub sluc ssaa ssab ssac ssas ssau ssca sscc sscs ssla sslc sssa sssb sssc ssss suas sub- suba subb subl subs suc- succ suck sucs suka suks suku sul- sula sulc sulk sull sulu sus- susa susk suss susu suus uabc uaca uasa uaua ubac ubal ubba ubla ubls ucak ucal ucas ucbc ucca ucka ucla ucsa ucsb ucsc ucsu ucua ukba ukcc ukla uksa uksc ulaa ulas ulbc ulcc ulla ulsa ulua uluk ulul ulus us-a us-k usaa usac usak usal usas usba usbc usbl usbs usca uscc uscs uska uslu ussa ussb ussc usss ussu usua usul usus uulu uuuu