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