a-a aaa aae aag aas aax aea aee aeg aes aex ag- aga age agg ags agx as- asa ase asg ass asx ax- axa axe axs axx eaa eae eag eas eax eea eee eeg ees eex ega ege egg egs egx es- esa ese esg ess esx ex- exa exe exs exx gaa gae gag gas ge- gea gee geg ges gex gga ggg ggs gsa gse gsg gss gsx gxa gxs saa sae sag sas sax se- sea see seg ses sex sga sge sgg sgs sgx ss- ssa sse ssg sss ssx sxs xaa xag xas xee xeg xes xex xge xsa xss xxx