-al a-a a-b a-c a-t aaa aab aac aal aas aat aau ab- aba abb abc abl abs abt abu ac- aca acb acc acl acs act acu al- ala alb alc all als alt alu as- asa asb asc asl ass ast asu at- ata atb atc atl ats att atu au- aua aub auc aul aus aut b-u baa bab bac bal bas bat bau bba bbb bbc bbl bbs bbt bbu bca bcb bcc bcl bcs bct bcu bla blb blc bll bls blt blu bsa bsb bsc bsl bss bst bsu bta btb btc btl bts btt btu bua bub buc bul bus but buu c-- caa cab cac cal cas cat cau cba cbb cbc cbl cbs cbt cbu cca ccb ccc ccl ccs cct ccu cl- cla clb clc cll cls clt clu csa csb csc csl css cst csu cta ctb ctc ctl cts ctt ctu cua cub cuc cul cus cut cuu la- laa lab lac lal las lat lau lba lbb lbc lbl lbs lbt lbu lca lcb lcc lcl lcs lct lcu lla llb llc lll lls llt llu lsa lsb lsc lsl lss lst lsu lta ltb ltc ltl lts ltt ltu lua lub luc lul lus lut luu saa sab sac sal sas sat sau sba sbb sbc sbl sbs sbt sbu sca scb scc scl scs sct scu sla slb slc sll sls slt slu ss- ssa ssb ssc ssl sss sst ssu sta stb stc stl sts stt stu sua sub suc sul sus sut suu taa tab tac tal tas tat tau tba tbb tbc tbl tbs tbt tbu tca tcb tcc tcl tcs tct tcu tla tlc tll tls tlt tlu tsa tsb tsc tsl tss tst tsu tta ttb ttc ttl tts ttt ttu tua tub tuc tul tus tut tuu ua- uaa uab uac ual uas uat uau uba ubb ubc ubl ubs ubt ubu uca ucb ucc ucl ucs uct ucu ula ulb ulc ull uls ult ulu usa usb usc usl uss ust usu uta utb utc utl uts utt utu uua uuc uus uut uuu

aaaa aaab aaac aaal aaas aaba aabb aabc aabl aabt aaca aacb aacc aacl aacs aact aacu aala aalc aall aals aalu aasa aasc aass aast aasu aata aatc aatt aaus abaa abab abac abal abas abat abau abb- abba abbb abbs abbt abca abcb abcc abcl abcs abct abla abls abs- absa absl abss absu abta abts abtu abua abul abus abut ac-t acaa acab acac acas acat acba acbl acca accc accs acct accu acla aclc acls aclu acsa acsc acsl acss acst acta actc actl acts actt actu acu- acul acus acut alaa alac alal alas alat alau alb- alba albc albs albu alca alcc alcs all- alla alll alls allu alsa alsc alst alta alts alua alus alut asaa asab asac asal asas asat asau asba asbu asc- asca ascb ascc ascl asct asla assa assc assl asss asst assu asta astb astc astl asts asub asus at-l at-t ataa atab atac atal atas atat atbs atca atcc atcl atcs atla atls atsb atsc atst atta atts attu atua atub atuc atul atus auaa auca auct aul- aula aull auls ault aulu ausa aust ausu aut- auts baaa baal baas baat baba babb babs babu bac- baca bacc bacs bact bala balc ball bals balt balu basa basc bass bast basu bata batc bats batt batu bau- baul bbas bbau bbbb bbbs bblb bbls bcaa bcas bcat bcbc bcbs bcca bccc bccl bccs bcsa bcsc bcsl bcss bctc bcts bcuc blaa blab blac blas blat blau blbt blcu blls blss blst blts blub blus blut bsaa bsac bsas bsat bscs bslc bssc bsts btaa btcc btcl btcs btla btss bttb btus bual buat buba bubb bubs bubu buca bucc bucs bucu bula bulb bull buls bult bulu busa busc buss bust busu but- buta buts butt buus caaa caab caac caal caas caat caba cabs cabu cac- caca cacc cala calc call cals calt calu casa casb casc casl cass cast casu cat- cata catb catc cats catt catu cauc caul caus caut cbac cbal cbat cbbc cbbs cbca cbcc cbcl cbcs cbct cbcu cblb cblc cbsa cbsc cbta cbtc cbtl cbus ccaa ccab ccac ccas ccat ccba ccbc ccca cccb cccc cccl cccs cccu ccla cclc ccls ccsa ccsl ccss ccst cctb cctc cctl cctt ccuc ccus ccut clab clas clat clau clsa clsc cltb cltc clts club clut csaa csab csac csas csat cscb cscc cscl cscs csla cslu cssa csta cstc csts csua csus ctab ctal ctba ctbs ctca ctls ctsa ctsc ctss ctsu ctta ctts cuau cub- cuba cubb cubs cuca cucc cula culb culc cull culs cult cusa cusb cuss cust cusu cut- cuta cutc cuts cutt laaa laac laal laas laat laba labs labu laca lacc lacl lacs lact lacu lala lall lalu lasa lass last lasu lata latc lats latt latu laub laul laus laut lbcc lbsc lcac lcat lcbc lcca lccc lccs lcls lcsc lctl lcts llat llbs llcc llcs lllc llll lsat lsbu lscb lscs lsla lssa lsts ltac ltbl ltcc ltcs ltsa lttc ltuc luas luau luba lubs luca lucs lula lull lulu lusa luss lust luta luts luua sa-c saab saac saal saas saat saba sabb sabc sabs sabu saca sacc sacs sact sacu sala salc sall sals salt salu sasa sasc sasl sass sast sata satb satc satl sats satt satu saua sauc saul saus saut sbaa sbac sbas sbbs sbca sbcc sbcs sbct sbsa sbst sbtc sbus scaa scab scac scal scas scat scba sccc sccl sccs scct scl- sclc scls scsa scsc scsl scst scsu sctc sctl scts scua scub scul scut slaa slab slac slas slat slau slcc slcu slsa slsc slst slsu slts slub sluc slut ssaa ssab ssac ssas ssat ssau ssca sscc sscs ssla sslc sslt sssa sssb sssc ssss ssta sstb sstc sstl ssts stab stac stal stas stat stau stbc