a-a a-b a-c a-t aaa aab aac aad aas aat aau aay ab- aba abb abc abd abs abt abu aby ac- aca acb acc acd acs act acu acy ad- ada adb adc add ads adt adu ady as- asa asb asc asd ass ast asu asy at- ata atb atc atd ats att atu au- aua aub auc aud aus aut ay- aya ayc ayd ays ayt ayu b-u baa bab bac bad bas bat bau bay bba bbb bbc bbd bbs bbt bbu bby bca bcb bcc bcd bcs bct bcu bcy bda bdb bdc bdd bds bdt bdu bdy bsa bsb bsc bsd bss bst bsu bsy bta btb btc btd bts btt btu bty bua bub buc bud bus but buu buy by- bya byc byd bys byt byu c-- caa cab cac cad cas cat cau cay cba cbb cbc cbd cbs cbt cbu cby cca ccb ccc ccd ccs cct ccu cda cdb cdc cdd cds cdt cdu cdy csa csb csc csd css cst csu csy cta ctb ctc ctd cts ctt ctu cty cua cub cuc cud cus cut cuu cuy cya cyb cyc cyd cys cyt daa dab dac dad das dat dau day dba dbb dbc dbd dbs dbt dbu dby dca dcb dcc dcd dcs dct dcu dda ddb ddc ddd dds ddt ddu ddy dsa dsb dsc dsd dss dst dsu dsy dta dtb dtc dtd dts dtt dtu dty dua dub duc dud dus dut duy dy- dya dyb dyc dyd dys dyu dyy saa sab sac sad sas sat sau say sba sbb sbc sbd sbs sbt sbu sby sca scb scc scd scs sct scu sda sdb sdc sdd sds sdt sdu sdy ss- ssa ssb ssc ssd sss sst ssu sta stb stc std sts stt stu sty sua sub suc sud sus sut suu suy sy- sya syb syc syd sys syt syu taa tab tac tad tas tat tau tay tba tbb tbc tbd tbs tbt tbu tca tcb tcc tcd tcs tct tcu tda tdb tdc tdd tds tdt tdu tdy tsa tsb tsc tsd tss tst tsu tsy tta ttb ttc ttd tts ttt ttu tty tua tub tuc tud tus tut tuu tuy tya tyc tyd tys tyt ua- uaa uab uac uad uas uat uau uay uba ubb ubc ubs ubt ubu uby 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 uty uua uuc uus uut uuu uyc uys uyu yaa yab yac yad yas yat yau yay ybc ybs yby yca ycc ycd ycs ycu ycy yda yds ydt ydy ysa ysb ysc yss yst ysu ysy yta ytc ytd yts ytt ytu yua yud yus yut yuu yuy yyb yyc yys yyt yyu yyy

a-ya aaaa aaab aaac aaad aaas aaba aabb aabc aabd aabt aaby aaca aacb aacc aacd aacs aact aacu aacy aada aadc aads aadt aadu aasa aasc aasd aass aast aasu aata aatc aatt aaus abaa abab abac abad abas abat abau abay abb- abba abbb abbs abbt abby abca abcb abcc abcd abcs abct abda abdu abdy abs- absa absd abss absu abta abts abtu abua abud abus abut abuy abyc abys abyt abyy ac-t acaa acab acac acad acas acat acba acca accc accd accs acct accu accy acda acdb acdc acds acdt acsa acsc acsd acss acst acta actc acts actt actu acu- acus acut adaa adab adac adad adas adat aday adba adbc adcc adcs adda addc addd adds addu addy adsa adss adst adta adts adua adub adya adyt asaa asab asac asad asas asat asau asay asba asbu asby asc- asca ascb ascc asct asda asds assa assc assd asss asst assu assy asta astb astc asts asty asub asud asus asya at-t ataa atab atac atad atas atat atay atbs atca atcc atcs atdt atsb atsc atst atta atts attu atty atua atub atuc atus atya atys auaa auby auca auct audc ausa ausd aust ausu aut- auts auty ayad ayas ayat ayay ayca ayda ayds aysu ayta ayub ayya baaa baad baas baat baba babb babs babu baby bac- baca bacc bacs bact bada badb badd bads badu bady basa basc bass bast basu bata batc bats batt batu baty bau- baud baya bays bayt bayu bbad bbas bbau bbay bbbb bbbs bbdd bcaa bcas bcat bcbc bcbs bcca bccc bccs bcda bcds bcsa bcsc bcss bctc bcts bcuc bday 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 budy busa busc buss bust busu busy but- buta buts butt buty buus buys buyu byas bysb byss byst bysy byts byyd c-cd caaa caab caac caas caat caba cabs cabu caby cac- caca cacc cada cadc cadd cads cadu cady casa casb casc casd cass cast casu cat- cata catb catc catd cats catt catu caty cauc caus caut cays cbac cbat cbbc cbbs cbca cbcc cbcs cbct cbcu cbdb cbdc cbds cbsa cbsc cbta cbtc cbus cbyt 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 cday cdba cdcs cdda cddb cdss csaa csab csac csas csat cscb cscc cscd cscs csda csdb cssa cssd csta cstc cstd csts csua csus csys ctab ctba ctbs ctca ctsa ctsc ctss ctsu ctta ctts cuau cub- cuba cubb cubs cuby cuca cucc cuda cuds cusa cusb cusd cuss cust cusu cusy cut- cuta cutc cuts cutt cuy- cya- cyaa cyba cybb cybc cyc- cyca cycb cycc cycs cyds cyst cyt- cyta cytb cyy- cyyc daab daad daas daau daba dabb dabs dabt dabu daca dacs dact dada dads dadu dady dasa dasb dasc dasd dass dast dasy data dats datt