aaaa aaac aaas aaca aacc aacs aact aasa aasc aass aast aata aatc aatt ac-t acaa acac acas acat acca accc accs acct acsa acsc acss acst acta actc acts actt asaa asac asas asat asc- asca ascc asct assa assc asss asst asta astc asts at-t ataa atac atas atat atca atcc atcs atsc atst atta atts caaa caac caas caat cac- caca cacc casa casc cass cast cat- cata catc catt ccaa ccac ccas ccat ccca cccc cccs ccsa ccss ccst cctc cctt csaa csac csas csat cscc cscs cssa csta cstc csts ctca ctsa ctsc ctss ctta ctts sa-c saac saas saat saca sacc sacs sact sasa sasc sass sast sata satc sats satt scaa scac scas scat sccc sccs scct scsa scsc scst sctc scts ssaa ssac ssas ssat ssca sscc sscs sssa sssc ssss ssta sstc ssts stac stas stat stca stcc stcs stss sttc taa- taas taat taca tacc tacs tact tasa tasc tass tast tata tats tatt tcca tccc tctc tcts tsaa tsat tsca tscc tssa tsst tstc tsts ttss tttt