aaaa aaas aasa aass aast aata aatt agag agas agat agga agsa agsg agst agta agts agxt asaa asag asas asat asgt assa asss asst asta asts at-t at-x ataa atas atat atax atst atta atts axat gaas gaga gagg gags gasa gass gast gasx gata gats gatt gatx gggg ggss gsat gtaa gtta sa-x saag saas saat saga sagg sags sagt sasa sass sast sata satg sats satt saxa saxt sgaa sggg sggs sgss sgta sgts ssaa ssas ssat ssgs ssgt sssa ssss ssta ssts stag stas stat stax stss taa- taag taas taat taga tagg tags tasa tass tast tata tats tatt tax- taxa taxt tgts tsaa tsat tsgt tssa tssg tsst tsts ttss tttt txaa txga xaga xats xxxx