a-a a-b a-c a-t aaa aab aac aad aas aat aau ab- aba abb abc abd abs abt abu ac- aca acb acc acd acs act acu ad- ada adb adc add ads adt adu as- asa asb asc asd ass ast asu at- ata atb atc atd ats att atu au- aua aub auc aud aus aut b-u baa bab bac bad bas bat bau bba bbb bbc bbd bbs bbt bbu bca bcb bcc bcd bcs bct bcu bda bdb bdc bdd bds bdt bdu bsa bsb bsc bsd bss bst bsu bta btb btc btd bts btt btu bua bub buc bud bus but buu c-- caa cab cac cad cas cat cau cba cbb cbc cbd cbs cbt cbu cca ccb ccc ccd ccs cct ccu cda cdb cdc cdd cds cdt cdu csa csb csc csd css cst csu cta ctb ctc ctd cts ctt ctu cua cub cuc cud cus cut cuu daa dab dac dad das dat dau dba dbb dbc dbd dbs dbt dbu dca dcb dcc dcd dcs dct dcu dda ddb ddc ddd dds ddt ddu dsa dsb dsc dsd dss dst dsu dta dtb dtc dtd dts dtt dtu dua dub duc dud dus dut saa sab sac sad sas sat sau sba sbb sbc sbd sbs sbt sbu sca scb scc scd scs sct scu sda sdb sdc sdd sds sdt sdu ss- ssa ssb ssc ssd sss sst ssu sta stb stc std sts stt stu sua sub suc sud sus sut suu taa tab tac tad tas tat tau tba tbb tbc tbd tbs tbt tbu tca tcb tcc tcd tcs tct tcu tda tdb tdc tdd tds tdt tdu tsa tsb tsc tsd tss tst tsu tta ttb ttc ttd tts ttt ttu tua tub tuc tud tus tut tuu ua- uaa uab uac uad uas uat uau uba ubb ubc ubs ubt ubu uca ucb ucc ucd ucs uct ucu uda udb udc udd uds udt udu usa usb usc usd uss ust usu uta utb utc utd uts utt utu uua uuc uus uut uuu

aaaa aaab aaac aaad aaas aaba aabb aabc aabd aabt aaca aacb aacc aacd aacs aact aacu aada aadc aads aadt aadu aasa aasc aasd aass aast aasu aata aatc aatt aaus abaa abab abac abad abas abat abau abb- abba abbb abbs abbt abca abcb abcc abcd abcs abct abda abdu abs- absa absd abss absu abta abts abtu abua abud abus abut ac-t acaa acab acac acad acas acat acba acca accc accd accs acct accu acda acdb acdc acds acdt acsa acsc acsd acss acst acta actc acts actt actu acu- acus acut adaa adab adac adad adas adat adba adbc adcc adcs adda addc addd adds addu adsa adss adst adta adts adua adub asaa asab asac asad asas asat asau asba asbu asc- asca ascb ascc asct asda asds assa assc assd asss asst assu asta astb astc asts asub asud asus at-t ataa atab atac atad atas atat atbs atca atcc atcs atdt atsb atsc atst atta atts attu atua atub atuc atus auaa auca auct audc ausa ausd aust ausu aut- auts baaa baad baas baat baba babb babs babu bac- baca bacc bacs bact bada badb badd bads badu basa basc bass bast basu bata batc bats batt batu bau- baud bbad bbas bbau bbbb bbbs bbdd bcaa bcas bcat bcbc bcbs bcca bccc bccs bcda bcds bcsa bcsc bcss bctc bcts bcuc bdbc bddc bdsd bsaa bsac bsas bsat bsbd bscs bssc bssd bsts btaa btcc btcs btdt btss bttb btus buad buat buba bubb bubs bubu buca bucc bucs bucu buda budb budd buds budu busa busc buss bust busu but- buta buts butt buus c-cd caaa caab caac caas caat caba cabs cabu cac- caca cacc cada cadc cadd cads cadu casa casb casc casd cass cast casu cat- cata catb catc catd cats catt catu cauc caus caut cbac cbat cbbc cbbs cbca cbcc cbcs cbct cbcu cbdb cbdc cbds cbsa cbsc cbta cbtc cbus ccaa ccab ccac ccad ccas ccat ccba ccbc ccca cccb cccc cccs cccu ccdc ccds ccsa ccsd ccss ccst cctb cctc cctt ccuc ccus ccut cdaa cdac cdad cdba cdcs cdda cddb cdss csaa csab csac csas csat cscb cscc cscd cscs csda csdb cssa cssd csta cstc cstd csts csua csus ctab ctba ctbs ctca ctsa ctsc ctss ctsu ctta ctts cuau cub- cuba cubb cubs cuca cucc cuda cuds cusa cusb cusd cuss cust cusu cut- cuta cutc cuts cutt daab daad daas daau daba dabb dabs dabt dabu daca dacs dact dada dads dadu dasa dasb dasc dasd dass dast data dats datt datu daub daud daus daut dbas dbcc dbcs dbsa dbss dbtt dbus dcas dcbc dcca dccb dccc dccs dcct dccu dcdb dcds dcsc dcss dctc dcts dddd ddss ddts ddub dsac dsba dsbc dscc dscs dsda dssa dssc dsst dstc dsts dtaa dtac dtcc dtss duaa duab duad duas duat dub- duba dubb dubc dubs dubu duca ducs duct duda dudd duds dudu dusa dust duta duts duut sa-c saab saac saad saas saat saba sabb sabc sabs sabu saca sacc sacd sacs sact sacu sada sadb sadc sadd sads sadt sadu sasa sasc sasd sass sast sata satb satc satd sats satt satu saua sauc saud saus saut sbaa sbac sbas sbbs sbca sbcc sbcs sbct sbds sbsa sbsd sbst sbtc sbus scaa scab scac scad scas scat scba sccc sccs scct scda scdc scds scsa scsc scsd scst scsu sctc sctd scts scua scub scud scut sdau sdba sdcc sddc sdds sdsc sdss sdsu ssaa ssab ssac ssas ssat ssau ssca sscc sscs ssdc ssdd sssa sssb sssc ssss ssta sstb sstc sstd ssts stab stac stad stas stat stau stbc stbd stbs stca stcc stcs stcu stds stss sttc sttd stub stuc stud stus stut suas suat sub- suba subb subd subs suc- succ sucs suda sudd suds sus- susa susd suss