a-a a-b a-c a-t aaa aab aac aag aak aas aat aau ab- aba abb abc abg abk abs abt abu ac- aca acb acc acg ack acs act acu ag- aga agb agc agg agk ags agt agu aka akb akc akg akk aks aku as- asa asb asc asg ask ass ast asu at- ata atb atc atg ats att atu au- aua aub auc aug auk aus aut b-u baa bab bac bag bak bas bat bau bba bbb bbc bbg bbk bbs bbt bbu bca bcb bcc bcg bck bcs bct bcu bga bgb bgc bgg bgk bgs bgt bgu bka bkb bkc bkg bkk bks bkt bsa bsb bsc bsg bsk bss bst bsu bta btb btc btg btk bts btt btu bua bub buc bug buk bus but buu c-- caa cab cac cag cak cas cat cau cba cbb cbc cbg cbk cbs cbt cbu cca ccb ccc ccg cck ccs cct ccu cga cgb cgc cgg cgs cgt cgu cka ckb ckc cks ckt csa csb csc csg csk css cst csu cta ctb ctc ctg ctk cts ctt ctu cua cub cuc cug cuk cus cut cuu gaa gab gac gag gak gas gat gau gba gbc gbg gbk gbs gbt gbu gca gcb gcc gcg gck gcs gct gcu gga ggb ggc ggg ggs ggt ggu gka gkb gks gkt gsa gsb gsc gsg gsk gss gst gsu gta gtb gtc gtg gtk gts gtt gtu gu- gua gub guc gug guk gus gut guu k-t ka- kaa kab kac kag kak kas kat kau kba kbb kbc kbk kbs kbu kca kcb kcc kcg kck kcs kct kcu kga kgb kgc kgs kgu kkb kkc kkk kks kkt kku ksa ksb ksc ksg ksk kss kst ksu kta ktb ktc ktg ktk kts ktt ktu kub kuc kug kuk kus kut kuu saa sab sac sag sak sas sat sau sba sbb sbc sbg sbk sbs sbt sbu sca scb scc scg sck scs sct scu sga sgb sgc sgg sgk sgs sgt sgu sk- ska skb skc skg skk sks skt sku ss- ssa ssb ssc ssg ssk sss sst ssu sta stb stc stg stk sts stt stu sua sub suc sug suk sus sut suu taa tab tac tag tak tas tat tau tba tbb tbc tbg tbk tbs tbt tbu tca tcb tcc tcg tck tcs tct tcu tga tgb tgc tgg tgk tgs tgt tgu tka tkb tkc tkg tkk tks tkt tsa tsb tsc tsg tsk tss tst tsu tta ttb ttc ttg ttk tts ttt ttu tua tub tuc tug tuk tus tut tuu ua- uaa uab uac uag uak uas uat uau uba ubb ubc ubg ubk ubs ubt ubu uca ucb ucc ucg uck ucs uct ucu uga ugb ugc ugg ugk ugs ugt ugu uka ukb ukc ukk uku usa usb usc usg usk uss ust usu uta utb utc utk uts utt utu uua uuc uug uus uut uuu

a-ak aaaa aaab aaac aaas aaba aabb aabc aabt aaca aacb aacc aack aacs aact aacu aaka aaku aasa aasc aass aast aasu aata aatc aatk aatt aaus abaa abab abac abag abak abas abat abau abb- abba abbb abbs abbt abca abcb abcc abcs abct abs- absa abss absu abta abts abtu abua abug abuk abus abut ac-t acaa acab acac acag acas acat acba acca accc accs acct accu acga acgs acks acsa acsc acss acst acta actc actg acts actt actu acu- acus acut agac agag agas agat agau agba agca agcc agct agga aggu agsa agsg agst agsu agta agts agua agus agut akaa akas akca akka akku aksa akst aksu akua asaa asab asac asag asak asas asat asau asba asbu asc- asca ascb ascc asct asgt aska asks askt assa assc assk asss asst assu asta astb astc asts asub asus at-t ataa atab atac atak atas atat atbs atca atcc atck atcs atka atkt atsb atsc atst atta atts attu atua atub atuc atug atuk atus auaa auca auct auga augs auks ausa aust ausu aut- auts auug baaa baak baas baat baba babb babs babu bac- baca bacc back bacs bact baga bagg bags bagt bak- baka baks bakt baku basa basc bask bass bast basu bata batc bats batt batu bau- baug bauk bbas bbau bbbb bbbs bbga bcaa bcas bcat bcbc bcbg bcbs bcca bccc bccs bcgs bcsa bcsc bcss bctc bcts bcuc bgca bggs bgst bsaa bsac bsas bsat bscs bsgs bskt bssc bsts btaa btcc btcs btss bttb btus buat buba bubb bubs bubu buca bucc buck bucs bucu buga bugg bugs buka bukk buku busa busc busk buss bust busu but- buta buts butt buus caaa caab caac caas caat caba cabg cabs cabu cac- caca cacc cack caga cagg cags caka casa casb casc cask cass cast casu cat- cata catb catc cats catt catu cauc cauk caus caut cbac cbat cbbc cbbs cbca cbcc cbcs cbct cbcu cbga cbgb cbka cbkg cbsa cbsc cbta cbtc cbus ccaa ccab ccac ccag ccas ccat ccba ccbc ccca cccb cccc cccs cccu ccga ccgc ccgs ccgt ccsa ccsg ccss ccst cctb cctc cctt ccuc ccus ccut cgac cgas cgcc cgcg cggs cgsb cgss cgst cgtu ckac ckat ckbc ckck ckcs ckga cksa cksb ckst cktb ckts csaa csab csac csak csas csat cscb cscc cscs cska csks cssa csta cstc cstg csts csua csus ctab ctag ctba ctbs ctca ctgu ctsa ctsc ctss ctsu ctta ctts cuau cub- cuba cubb cubs cuca cucc cuck cuga cuk- cuka cusa cusb cusg cusk cuss cust cusu cut- cuta cutc cuts cutt gaas gaba gabb gabs gabt gabu gack gaga gagg gags gagu gaku gasa gasb gasc gask gass gast gata gatc gats gatt gaua gaub gauk gaus gaut gbag gbas gbbs gc-c gcaa gcat gcbc gccc gccs gcss gcst gcsu gctc gcts ggbt gggg ggss gsab gsat gskb gtaa gtcs gtta guaa guac guag guat guba gubb gubs gubu