a-a a-b a-c a-t aaa aab aac aat ab- aba abb abc abt ac- aca acb acc act at- ata atb atc att baa bab bac bat bba bbb bbc bbt bca bcb bcc bct bta btb btc btt c-- caa cab cac cat cba cbb cbc cbt cca ccb ccc cct cta ctb ctc ctt taa tab tac tat tba tbb tbc tbt tca tcb tcc tct tta ttb ttc ttt

aaaa aaab aaac aaba aabb aabc aabt aaca aacb aacc aact aata aatc aatt abaa abab abac abat abb- abba abbb abbt abca abcb abcc abct abta ac-t acaa acab acac acat acba acca accc acct acta actc actt at-t ataa atab atac atat atca atcc atta baaa baat baba babb bac- baca bacc bact bata batc batt bbbb bcaa bcat bcbc bcca bccc bctc btaa btcc bttb caaa caab caac caat caba cac- caca cacc cat- cata catb catc catt cbac cbat cbbc cbca cbcc cbct cbta cbtc ccaa ccab ccac ccat ccba ccbc ccca cccb cccc cctb cctc cctt ctab ctba ctca ctta taa- taat taba tabb tabc taca tacc tact tata tatb tatt tbca tbcb tbcc tbta tcca tccc tctc ttab ttbb tttt

-aaa- aaata aabaa aabba aacbc abaab ababa abaca abbac abbat abccc abtaa acaca acacb atbat baata bacab bacca bacta batab batat batta bccat c-a-c ca-ca caaba cata- catta ccccc t-cat ta-ta tabac tabat tacca tataa tatta tbtbt ttttt

aaaaba abacab at-bat ataaba atacta baabaa bacaba batata batcat bbbbbb catcat ccaatt ccatca tabata tabbat tacata tataat tattat

attacca attatba bac-cab baccata batabat bbbbbbb tac-tac tacaca tat-tat

bbbbbbbb

baabaabaa

tat-tat-tat

aaaaaaaaaaaaaaa bbbbbbbbbbbbbbb ccccccccccccccc