-ic a-a a-b a-c a-i a-t aaa aab aac aag aai aas aat aau ab- aba abb abc abg abi abs abt abu ac- aca acb acc acg aci acs act acu ag- aga agb agc agg agi ags agt agu ai- aia aib aic aig aii ais ait aiu as- asa asb asc asg asi ass ast asu at- ata atb atc atg ati ats att atu au- aua aub auc aug aui aus aut b-u baa bab bac bag bai bas bat bau bba bbb bbc bbg bbi bbs bbt bbu bca bcb bcc bcg bci bcs bct bcu bga bgb bgc bgg bgi bgs bgt bgu bi- bia bib bic big bii bis bit biu bsa bsb bsc bsg bsi bss bst bsu bta btb btc btg bti bts btt btu bua bub buc bug bui bus but buu c-- caa cab cac cag cai cas cat cau cba cbb cbc cbg cbi cbs cbt cbu cca ccb ccc ccg cci ccs cct ccu cga cgb cgc cgg cgi cgs cgt cgu ci- cia cib cic cig cii cis cit ciu csa csb csc csg csi css cst csu cta ctb ctc ctg cti cts ctt ctu cua cub cuc cug cui cus cut cuu gaa gab gac gag gai gas gat gau gba gbc gbg gbi gbs gbt gbu gca gcb gcc gcg gci gcs gct gcu gga ggb ggc ggg ggi ggs ggt ggu gia gib gic gig gii gis git giu gsa gsb gsc gsg gsi gss gst gsu gta gtb gtc gtg gti gts gtt gtu gu- gua gub guc gug gui gus gut guu ia- iaa iab iac iag iai ias iat iau iba ibb ibc ibg ibi ibs ibt ibu ica icb icc icg ici ics ict icu iga igb igc igg igi igs igt igu iia iib iic iii iis iit iiu is- isa isb isc isg isi iss ist isu ita itb itc itg iti its itt itu iu- iua iub iuc iug iui ius iut saa sab sac sag sai sas sat sau sba sbb sbc sbg sbi sbs sbt sbu sca scb scc scg sci scs sct scu sga sgb sgc sgg sgi sgs sgt sgu sia sib sic sig sii sis sit siu ss- ssa ssb ssc ssg ssi sss sst ssu sta stb stc stg sti sts stt stu sua sub suc sug sui sus sut suu taa tab tac tag tai tas tat tau tba tbb tbc tbg tbi tbs tbt tbu tca tcb tcc tcg tci tcs tct tcu tga tgb tgc tgg tgi tgs tgt tgu tia tib tic tig tii tis tit tiu tsa tsb tsc tsg tsi tss tst tsu tta ttb ttc ttg tti tts ttt ttu tua tub tuc tug tui tus tut tuu ua- uaa uab uac uag uai uas uat uau uba ubb ubc ubg ubi ubs ubt ubu uca ucb ucc ucg uci ucs uct ucu uga ugb ugc ugg ugi ugs ugt ugu uia uib uic uig uii uis uit uiu usa usb usc usg usi uss ust usu uta utb utc uti uts utt utu uua uuc uug uus uut uuu

a-ii aaaa aaab aaac aaai aaas aaba aabb aabc aabi aabt aaca aacb aacc aaci aacs aact aacu aaib aaic aaii aais aasa aasc aasi aass aast aasu aata aatc aatt aaus abaa abab abac abag abai abas abat abau abb- abba abbb abbi abbs abbt abca abcb abcc abci abcs abct abia abib abic abig abis abit abiu abs- absa absi abss absu abta abts abtu abua abug abus abut ac-t acaa acab acac acag acai acas acat acba acca accc acci accs acct accu acga acgi acgs aci- acia acic acis acsa acsc acsi acss acst acta actc actg acti acts actt actu acu- acus acut agac agag agai agas agat agau agba agca agcc agct agga aggi aggu agia agib agic agig agii agis agit agsa agsg agst agsu agta agts agua agui agus agut aiai aias aiba aica aicc aics aiga aiia aiib aiic aisa aisb aisg aisi aist aita aiti aits aitt aitu aiui asaa asab asac asag asai asas asat asau asba asbu asc- asca ascb ascc asci asct asgt asia asic asii asis asit assa assc assi asss asst assu asta astb astc asti asts asub asui asus at-t ataa atab atac atai atas atat atbs atca atcc atcs atia atic atis atit atiu atsb atsc atsi atst atta atti atts attu atua atub atuc atug atus auaa auca auci auct auga augi augs auis ausa aust ausu aut- auts auug ba-i baaa baas baat baba babb babi babs babu bac- baca bacc baci bacs bact baga bagg bagi bags bagt baia baib baic baig bais bait basa basc basi bass bast basu bata batc bati bats batt batu bau- baug bbas bbau bbbb bbbs bbci bbga bcaa bcas bcat bcbc bcbg bcbs bcca bccc bcci bccs bcgs bcia bcis bcit bcsa bcsc bcss bctc bcts bcuc bgca bggs bgia bgst bias biat biba bibb bibi bibs bica bicc bicg bici bics biga bigb bigc bigg bigs bigt bigu biis bis- bisa bisc biss bist bisu bita bitc bits bitt bitu bsaa bsac bsas bsat bsci bscs bsgs bsic bssc bsts btaa btcc btcs btss bttb btus buat buba bubb bubi bubs bubu buca bucc buci bucs bucu buga bugg bugi bugs buic buis buit buiu busa busc busi buss bust busu but- buta buti buts butt buus caaa caab caac caas caat caba cabg cabi cabs cabu cac- caca cacc caci caga cagg cagi cags caia caib caic cais cait caiu casa casb casc casi cass cast casu cat- cata catb catc cati cats catt catu cauc caus caut cbac cbat cbbc cbbs cbca cbcc cbcs cbct cbcu cbga cbgb cbia cbit cbsa cbsc cbsi cbta cbtc cbus ccaa ccab ccac ccag ccai ccas ccat ccba ccbc ccca cccb cccc ccci cccs cccu ccga ccgc ccgs ccgt ccic ccii ccis ccsa ccsg ccsi ccss