a-a a-b a-c a-t aaa aab aac aae aag aak aas aat ab- aba abb abc abe abg abk abs abt ac- aca acb acc ace acg ack acs act aea aeb aec aee aeg aek aes aet ag- aga agb agc age agg agk ags agt aka akb akc ake akg akk aks as- asa asb asc ase asg ask ass ast at- ata atb atc ate atg ats att baa bab bac bae bag bak bas bat bba bbb bbc bbe bbg bbk bbs bbt bca bcb bcc bce bcg bck bcs bct be- bea beb bec bee beg bek bes bet bga bgb bgc bge bgg bgk bgs bgt bka bkb bkc bke bkg bkk bks bkt bsa bsb bsc bse bsg bsk bss bst bta btb btc bte btg btk bts btt c-- caa cab cac cae cag cak cas cat cba cbb cbc cbe cbg cbk cbs cbt cca ccb ccc cce ccg cck ccs cct ce- cea ceb cec cee ceg cek ces cet cga cgb cgc cge cgg cgs cgt cka ckb ckc cks ckt csa csb csc cse csg csk css cst cta ctb ctc cte ctg ctk cts ctt eaa eab eac eae eag eak eas eat eba ebb ebc ebe ebg ebk ebs ebt ec- eca ecb ecc ece ecg eck ecs ect eea eeb eec eee eeg eek ees eet ega egb egc ege egg egs egt eka ekb ekc eke ekg eks ekt es- esa esb esc ese esg esk ess est eta etb etc ete etg etk ets ett gaa gab gac gae gag gak gas gat gba gbc gbe gbg gbk gbs gbt gca gcb gcc gce gcg gck gcs gct ge- gea geb gec gee geg gek ges get gga ggb ggc ggg ggs ggt gka gkb gks gkt gsa gsb gsc gse gsg gsk gss gst gta gtb gtc gte gtg gtk gts gtt k-t ka- kaa kab kac kae kag kak kas kat kba kbb kbc kbe kbk kbs kca kcb kcc kce kcg kck kcs kct ke- kea keb kec kee keg kek kes ket kga kgb kgc kgs kkb kkc kke kkk kks kkt ksa ksb ksc kse ksg ksk kss kst kta ktb ktc kte ktg ktk kts ktt saa sab sac sae sag sak sas sat sba sbb sbc sbe sbg sbk sbs sbt sca scb scc sce scg sck scs sct se- sea seb sec see seg sek ses set sga sgb sgc sge sgg sgk sgs sgt sk- ska skb skc ske skg skk sks skt ss- ssa ssb ssc sse ssg ssk sss sst sta stb stc ste stg stk sts stt taa tab tac tae tag tak tas tat tba tbb tbc tbe tbg tbk tbs tbt tca tcb tcc tce tcg tck tcs tct te- tea teb tec tee teg tek tes tet tga tgb tgc tge tgg tgk tgs tgt tka tkb tkc tke tkg tkk tks tkt tsa tsb tsc tse tsg tsk tss tst tta ttb ttc tte ttg ttk tts ttt

-ase a-ak a-be aaaa aaab aaac aaae aaas aaba aabb aabc aabt aaca aacb aacc aace aack aacs aact aaea aaec aaes aage aaka aake aasa aasc aase aass aast aata aatc aatk aatt abaa abab abac abae abag abak abas abat abb- abba abbb abbe abbs abbt abca abcb abcc abcs abct abec abee abes abet abs- absa abse abss abta abts ac-t acaa acab acac acae acag acas acat acba acca accc acce accs acct ace- acea acec acek aces acet acga acgs acke acks acsa acsc acse acss acst acta actc acte actg acts actt aeac aeas aebs aecb aect aega aeka aesc aess aest aeta aetc aett agac agag agas agat agba agca agcc agce agct agea agee ages aget agga agge agsa agsg agst agta agte agts akaa akae akas akca akee akeg akes akka aksa akst akte asaa asab asac asae asag asak asas asat asba asc- asca ascb ascc asce asct asea asec asee asek ases aset asge asgt aska aske asks askt assa assc asse assk asss asst asta astb astc aste asts at-t ataa atab atac atae atak atas atat atbs atca atcc atck atcs atea atec atee ates atka atkt atsb atsc atse atst atta atte atts baaa baak baas baat baba babb babe babs bac- baca bacc bace back bacs bact baek baes baga bage bagg bags bagt bak- baka bake baks bakt basa basc base bask bass bast bata batc bate bats batt bbas bbbb bbbs bbeb bbet bbga bcaa bcas bcat bcbc bcbg bcbs bcca bccc bccs bcec bces bcet bcgs bcsa bcsc bcss bctc bcts beag beak beas beat beba bebb bebe beca beck becs beeb beeg beek bees beet bega begg begs beka beke beks bes- besa bese besk bess best beta betc bete bets bett bgca bggs bgst bsaa bsac bsas bsat bscs bsea bseb bsec bsee bseg bses bset bsgs bskt bssc bsse bsts btaa btcc btcs btec btek btss bttb caaa caab caac caas caat caba cabe cabg cabs cac- caca cacc cace cack caec caes caga cage cagg cags caka cake casa casb casc case cask cass cast cat- cata catb catc cate cats catt cbac cbat cbbc cbbs cbca cbcc cbce cbcs cbct cbea cbec cbee cbet cbga cbgb cbka cbkg cbsa cbsc cbse cbta cbtc ccaa ccab ccac ccag ccas ccat ccba ccbc ccca cccb cccc cccs ccee ccga ccgc ccgs ccgt ccsa ccsg ccss ccst cctb cctc cctt ceac ceas ceat ceba cebs cec- ceca cece cecs cect ceeb ceec cees cege ceke cesa cesc cese cesg cess cest cet- ceta cete cets cgac cgas cgcc cgcg cges cggs cgsb cgss cgst ckac ckat ckbc ckbe ckck ckcs ckga cksa cksb ckst cktb ckts csaa csab csac csak csas csat cscb cscc csce cscs csea csec csee cset cska csks cssa csse csta cstc cstg csts ctab ctae ctag ctba ctbs ctca ctec ctge ctsa ctsc ctss